./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c --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_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 0bc70f5a42db8733d2066db6be11885c85af9192 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 0bc70f5a42db8733d2066db6be11885c85af9192 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:12:36,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:12:36,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:12:36,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:12:36,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:12:36,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:12:36,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:12:36,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:12:36,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:12:36,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:12:36,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:12:36,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:12:36,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:12:36,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:12:36,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:12:36,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:12:36,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:12:36,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:12:36,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:12:36,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:12:36,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:12:36,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:12:36,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:12:36,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:12:36,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:12:36,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:12:36,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:12:36,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:12:36,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:12:36,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:12:36,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:12:36,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:12:36,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:12:36,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:12:36,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:12:36,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:12:36,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:12:36,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:12:36,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:12:36,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:12:36,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:12:36,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:12:36,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:12:36,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:12:36,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:12:36,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:12:36,455 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:12:36,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:12:36,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:12:36,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:12:36,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:12:36,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:12:36,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:12:36,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:12:36,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:12:36,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:12:36,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:12:36,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:12:36,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:12:36,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:12:36,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:12:36,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:12:36,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:12:36,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:12:36,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:12:36,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:12:36,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:12:36,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:12:36,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:12:36,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:12:36,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:12:36,462 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_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc70f5a42db8733d2066db6be11885c85af9192 [2020-12-01 15:12:36,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:12:36,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:12:36,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:12:36,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:12:36,796 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:12:36,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2020-12-01 15:12:36,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/362474758/7c51918c6d1f4bb6bc59d080ae19b71c/FLAG67046fa04 [2020-12-01 15:12:37,352 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:12:37,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2020-12-01 15:12:37,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/362474758/7c51918c6d1f4bb6bc59d080ae19b71c/FLAG67046fa04 [2020-12-01 15:12:37,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/362474758/7c51918c6d1f4bb6bc59d080ae19b71c [2020-12-01 15:12:37,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:12:37,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:12:37,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:12:37,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:12:37,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:12:37,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:12:37" (1/1) ... [2020-12-01 15:12:37,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76025e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:37, skipping insertion in model container [2020-12-01 15:12:37,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:12:37" (1/1) ... [2020-12-01 15:12:37,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:12:37,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:12:38,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:12:38,039 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:12:38,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:12:38,081 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:12:38,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38 WrapperNode [2020-12-01 15:12:38,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:12:38,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:12:38,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:12:38,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:12:38,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:12:38,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:12:38,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:12:38,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:12:38,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... [2020-12-01 15:12:38,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:12:38,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:12:38,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:12:38,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:12:38,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:12:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:12:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:12:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:12:38,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:12:38,698 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-01 15:12:38,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:12:38 BoogieIcfgContainer [2020-12-01 15:12:38,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:12:38,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:12:38,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:12:38,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:12:38,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:12:37" (1/3) ... [2020-12-01 15:12:38,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571ed4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:12:38, skipping insertion in model container [2020-12-01 15:12:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:38" (2/3) ... [2020-12-01 15:12:38,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571ed4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:12:38, skipping insertion in model container [2020-12-01 15:12:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:12:38" (3/3) ... [2020-12-01 15:12:38,711 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound2.c [2020-12-01 15:12:38,728 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:12:38,732 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:12:38,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:12:38,777 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:12:38,777 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:12:38,777 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:12:38,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:12:38,778 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:12:38,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:12:38,778 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:12:38,778 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:12:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-01 15:12:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:12:38,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:38,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:38,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-01 15:12:38,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:38,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347388569] [2020-12-01 15:12:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:39,045 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 15:12:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347388569] [2020-12-01 15:12:39,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:39,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:12:39,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507526040] [2020-12-01 15:12:39,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:12:39,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:12:39,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:12:39,073 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-01 15:12:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:39,099 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-01 15:12:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:12:39,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 15:12:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:39,111 INFO L225 Difference]: With dead ends: 83 [2020-12-01 15:12:39,111 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:12:39,115 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 15:12:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:12:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-01 15:12:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:12:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-01 15:12:39,170 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-01 15:12:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:39,171 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-01 15:12:39,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:12:39,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-01 15:12:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:12:39,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:39,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:39,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:12:39,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:39,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-01 15:12:39,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:39,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507064979] [2020-12-01 15:12:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:39,385 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 15:12:39,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507064979] [2020-12-01 15:12:39,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:39,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:12:39,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433296269] [2020-12-01 15:12:39,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:12:39,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:39,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:12:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:12:39,391 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-01 15:12:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:39,579 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-01 15:12:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:12:39,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:12:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:39,582 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:12:39,582 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 15:12:39,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:12:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 15:12:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-01 15:12:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 15:12:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-01 15:12:39,594 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-01 15:12:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:39,594 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-01 15:12:39,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:12:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-01 15:12:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:12:39,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:39,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:39,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:12:39,597 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:39,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1277140292, now seen corresponding path program 1 times [2020-12-01 15:12:39,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:39,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237664520] [2020-12-01 15:12:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:39,751 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 15:12:39,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237664520] [2020-12-01 15:12:39,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:39,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:12:39,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161240325] [2020-12-01 15:12:39,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:12:39,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:12:39,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:12:39,756 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-01 15:12:39,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:39,858 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-01 15:12:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:12:39,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:12:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:39,860 INFO L225 Difference]: With dead ends: 56 [2020-12-01 15:12:39,861 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:12:39,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:12:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:12:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-01 15:12:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:12:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-01 15:12:39,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-01 15:12:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:39,872 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-01 15:12:39,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:12:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-01 15:12:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:12:39,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:39,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:39,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:12:39,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1029013407, now seen corresponding path program 1 times [2020-12-01 15:12:39,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:39,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565967573] [2020-12-01 15:12:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:39,900 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:39,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971448149] [2020-12-01 15:12:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:39,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:12:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:40,091 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 15:12:40,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565967573] [2020-12-01 15:12:40,092 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:40,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971448149] [2020-12-01 15:12:40,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:40,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:12:40,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588915348] [2020-12-01 15:12:40,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:12:40,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:40,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:12:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:12:40,095 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2020-12-01 15:12:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:40,291 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-01 15:12:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:12:40,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:12:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:40,294 INFO L225 Difference]: With dead ends: 76 [2020-12-01 15:12:40,295 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:12:40,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:12:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:12:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-01 15:12:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-01 15:12:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-01 15:12:40,329 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-01 15:12:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:40,329 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-01 15:12:40,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:12:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-01 15:12:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:12:40,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:40,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:40,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:40,533 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2132259149, now seen corresponding path program 1 times [2020-12-01 15:12:40,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:40,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484382736] [2020-12-01 15:12:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:40,570 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:40,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574246735] [2020-12-01 15:12:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:40,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:12:40,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:41,085 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 15:12:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484382736] [2020-12-01 15:12:41,087 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574246735] [2020-12-01 15:12:41,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:41,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:12:41,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509178001] [2020-12-01 15:12:41,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:12:41,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:41,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:12:41,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:12:41,090 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-12-01 15:12:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:41,489 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-01 15:12:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:12:41,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-01 15:12:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:41,496 INFO L225 Difference]: With dead ends: 53 [2020-12-01 15:12:41,496 INFO L226 Difference]: Without dead ends: 42 [2020-12-01 15:12:41,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:12:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-01 15:12:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-01 15:12:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-01 15:12:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-12-01 15:12:41,516 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 18 [2020-12-01 15:12:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:41,516 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-12-01 15:12:41,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:12:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-12-01 15:12:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:12:41,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:41,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:41,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:41,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash 414391332, now seen corresponding path program 1 times [2020-12-01 15:12:41,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:41,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675867255] [2020-12-01 15:12:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:41,756 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:41,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720478493] [2020-12-01 15:12:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:41,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 15:12:41,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:42,184 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 15:12:42,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675867255] [2020-12-01 15:12:42,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:42,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720478493] [2020-12-01 15:12:42,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:12:42,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:12:42,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547402081] [2020-12-01 15:12:42,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:12:42,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:12:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:12:42,189 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 9 states. [2020-12-01 15:12:42,636 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-12-01 15:12:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:43,101 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-12-01 15:12:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:12:43,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-01 15:12:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:43,109 INFO L225 Difference]: With dead ends: 71 [2020-12-01 15:12:43,110 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 15:12:43,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:12:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 15:12:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-01 15:12:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 15:12:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-01 15:12:43,123 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-12-01 15:12:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:43,123 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-01 15:12:43,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:12:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-01 15:12:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:12:43,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:43,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:43,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:43,338 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:43,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1402054670, now seen corresponding path program 1 times [2020-12-01 15:12:43,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:43,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400102955] [2020-12-01 15:12:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:43,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:43,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130348422] [2020-12-01 15:12:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:43,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:12:43,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:12:43,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400102955] [2020-12-01 15:12:43,760 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:43,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130348422] [2020-12-01 15:12:43,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:12:43,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:12:43,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284597453] [2020-12-01 15:12:43,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:12:43,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:12:43,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:12:43,766 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 9 states. [2020-12-01 15:12:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:45,259 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-12-01 15:12:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:12:45,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-01 15:12:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:45,261 INFO L225 Difference]: With dead ends: 72 [2020-12-01 15:12:45,261 INFO L226 Difference]: Without dead ends: 68 [2020-12-01 15:12:45,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:12:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-01 15:12:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-12-01 15:12:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-01 15:12:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-01 15:12:45,272 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 25 [2020-12-01 15:12:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:45,273 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-01 15:12:45,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:12:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-01 15:12:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:12:45,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:45,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:45,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:45,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1510625279, now seen corresponding path program 2 times [2020-12-01 15:12:45,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:45,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32476130] [2020-12-01 15:12:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:45,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:45,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988326680] [2020-12-01 15:12:45,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:45,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:12:45,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:12:45,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-01 15:12:45,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:46,570 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 15:12:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:12:46,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32476130] [2020-12-01 15:12:46,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:46,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988326680] [2020-12-01 15:12:46,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:12:46,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 15:12:46,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472413372] [2020-12-01 15:12:46,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:12:46,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:12:46,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:12:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:12:46,705 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 13 states. [2020-12-01 15:12:47,927 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-01 15:12:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:49,479 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-12-01 15:12:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-01 15:12:49,480 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-12-01 15:12:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:49,481 INFO L225 Difference]: With dead ends: 88 [2020-12-01 15:12:49,481 INFO L226 Difference]: Without dead ends: 78 [2020-12-01 15:12:49,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2020-12-01 15:12:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-01 15:12:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-12-01 15:12:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-01 15:12:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-01 15:12:49,494 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 29 [2020-12-01 15:12:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:49,494 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-01 15:12:49,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:12:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-01 15:12:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 15:12:49,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:49,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:49,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:49,714 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 933681081, now seen corresponding path program 1 times [2020-12-01 15:12:49,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:12:49,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267633384] [2020-12-01 15:12:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:12:49,728 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:12:49,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467527290] [2020-12-01 15:12:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:50,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-01 15:12:50,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:50,987 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-12-01 15:12:51,034 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 15:12:51,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:12:51,145 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:12:51,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:12:51,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267633384] [2020-12-01 15:12:51,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:12:51,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467527290] [2020-12-01 15:12:51,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-01 15:12:51,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:51,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 15:12:51,235 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 15:12:51,235 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:12:51,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:12:51,471 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 15:12:51,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:12:51 BoogieIcfgContainer [2020-12-01 15:12:51,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:12:51,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:12:51,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:12:51,473 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:12:51,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:12:38" (3/4) ... [2020-12-01 15:12:51,478 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:12:51,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:12:51,483 INFO L168 Benchmark]: Toolchain (without parser) took 13733.85 ms. Allocated memory was 127.9 MB in the beginning and 157.3 MB in the end (delta: 29.4 MB). Free memory was 91.1 MB in the beginning and 97.4 MB in the end (delta: -6.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,486 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 127.9 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 19.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:12:51,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.29 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 101.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,488 INFO L168 Benchmark]: Boogie Preprocessor took 51.46 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 98.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,489 INFO L168 Benchmark]: RCFGBuilder took 473.42 ms. Allocated memory is still 127.9 MB. Free memory was 98.4 MB in the beginning and 81.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,492 INFO L168 Benchmark]: TraceAbstraction took 12769.28 ms. Allocated memory was 127.9 MB in the beginning and 157.3 MB in the end (delta: 29.4 MB). Free memory was 81.1 MB in the beginning and 98.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 73.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,492 INFO L168 Benchmark]: Witness Printer took 5.70 ms. Allocated memory is still 157.3 MB. Free memory was 98.4 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:12:51,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 127.9 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 19.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.29 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 101.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.46 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 98.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 473.42 ms. Allocated memory is still 127.9 MB. Free memory was 98.4 MB in the beginning and 81.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12769.28 ms. Allocated memory was 127.9 MB in the beginning and 157.3 MB in the end (delta: 29.4 MB). Free memory was 81.1 MB in the beginning and 98.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 73.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.70 ms. Allocated memory is still 157.3 MB. Free memory was 98.4 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: 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: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND TRUE !(cond) [L8] __assert_fail("0", "hard-u.c", 8, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 12.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 794 SDslu, 384 SDs, 0 SdLazy, 611 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=8, 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, 8 MinimizatonAttempts, 63 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 40471 SizeOfPredicates, 51 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 0/32 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 15:12:54,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:12:54,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:12:54,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:12:54,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:12:54,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:12:54,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:12:54,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:12:54,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:12:54,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:12:54,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:12:54,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:12:54,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:12:54,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:12:54,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:12:54,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:12:54,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:12:54,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:12:54,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:12:54,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:12:54,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:12:54,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:12:54,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:12:54,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:12:54,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:12:54,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:12:54,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:12:54,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:12:54,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:12:54,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:12:54,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:12:54,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:12:54,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:12:54,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:12:54,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:12:54,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:12:54,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:12:54,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:12:54,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:12:54,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:12:54,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:12:54,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:12:54,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:12:54,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:12:54,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:12:54,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:12:54,757 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:12:54,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:12:54,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:12:54,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:12:54,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:12:54,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:12:54,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:12:54,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:12:54,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:12:54,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:12:54,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:12:54,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:12:54,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:12:54,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:12:54,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:12:54,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:12:54,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:12:54,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:12:54,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:12:54,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:12:54,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:12:54,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:12:54,763 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:12:54,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:12:54,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:12:54,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:12:54,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:12:54,764 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_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc70f5a42db8733d2066db6be11885c85af9192 [2020-12-01 15:12:55,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:12:55,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:12:55,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:12:55,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:12:55,269 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:12:55,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2020-12-01 15:12:55,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/1d4458298/e9bfc27bb9fe46cdb23e772413c44ef0/FLAG1f1df8882 [2020-12-01 15:12:56,088 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:12:56,088 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2020-12-01 15:12:56,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/1d4458298/e9bfc27bb9fe46cdb23e772413c44ef0/FLAG1f1df8882 [2020-12-01 15:12:56,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/data/1d4458298/e9bfc27bb9fe46cdb23e772413c44ef0 [2020-12-01 15:12:56,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:12:56,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:12:56,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:12:56,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:12:56,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:12:56,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa1ab03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56, skipping insertion in model container [2020-12-01 15:12:56,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:12:56,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:12:56,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:12:56,697 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:12:56,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:12:56,742 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:12:56,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56 WrapperNode [2020-12-01 15:12:56,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:12:56,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:12:56,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:12:56,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:12:56,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:12:56,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:12:56,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:12:56,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:12:56,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... [2020-12-01 15:12:56,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:12:56,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:12:56,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:12:56,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:12:56,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:12:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:12:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:12:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:12:57,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:12:57,603 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-01 15:12:57,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:12:57 BoogieIcfgContainer [2020-12-01 15:12:57,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:12:57,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:12:57,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:12:57,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:12:57,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:12:56" (1/3) ... [2020-12-01 15:12:57,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343d83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:12:57, skipping insertion in model container [2020-12-01 15:12:57,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:12:56" (2/3) ... [2020-12-01 15:12:57,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343d83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:12:57, skipping insertion in model container [2020-12-01 15:12:57,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:12:57" (3/3) ... [2020-12-01 15:12:57,621 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound2.c [2020-12-01 15:12:57,639 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:12:57,643 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:12:57,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:12:57,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:12:57,706 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:12:57,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:12:57,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:12:57,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:12:57,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:12:57,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:12:57,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:12:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-01 15:12:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:12:57,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:57,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:57,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-01 15:12:57,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:12:57,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188097525] [2020-12-01 15:12:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:12:57,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:57,984 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 15:12:57,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:12:58,013 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 15:12:58,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188097525] [2020-12-01 15:12:58,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:58,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:12:58,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419509301] [2020-12-01 15:12:58,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:12:58,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:12:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:12:58,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:12:58,050 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-01 15:12:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:58,073 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-01 15:12:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:12:58,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 15:12:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:58,086 INFO L225 Difference]: With dead ends: 83 [2020-12-01 15:12:58,086 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:12:58,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 15:12:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:12:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-01 15:12:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:12:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-01 15:12:58,146 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-01 15:12:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:58,147 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-01 15:12:58,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:12:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-01 15:12:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:12:58,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:58,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:58,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:12:58,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-01 15:12:58,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:12:58,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350688315] [2020-12-01 15:12:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:58,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:12:58,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:58,484 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 15:12:58,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:12:58,517 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 15:12:58,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350688315] [2020-12-01 15:12:58,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:58,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 15:12:58,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401375167] [2020-12-01 15:12:58,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:12:58,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:12:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:12:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:12:58,522 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2020-12-01 15:12:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:58,786 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-01 15:12:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:12:58,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 15:12:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:58,790 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:12:58,791 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 15:12:58,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:12:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 15:12:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-01 15:12:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 15:12:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-01 15:12:58,816 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-01 15:12:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:58,816 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-01 15:12:58,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:12:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-01 15:12:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:12:58,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:58,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:59,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:12:59,040 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1277140292, now seen corresponding path program 1 times [2020-12-01 15:12:59,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:12:59,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999282462] [2020-12-01 15:12:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:59,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:12:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:12:59,163 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 15:12:59,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:12:59,205 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 15:12:59,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999282462] [2020-12-01 15:12:59,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:12:59,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 15:12:59,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702951017] [2020-12-01 15:12:59,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:12:59,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:12:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:12:59,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:12:59,209 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-01 15:12:59,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:12:59,591 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-01 15:12:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:12:59,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:12:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:12:59,594 INFO L225 Difference]: With dead ends: 56 [2020-12-01 15:12:59,594 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:12:59,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:12:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:12:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-01 15:12:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:12:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-01 15:12:59,609 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-01 15:12:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:12:59,610 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-01 15:12:59,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:12:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-01 15:12:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:12:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:12:59,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:12:59,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:12:59,819 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:12:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:12:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1029013407, now seen corresponding path program 1 times [2020-12-01 15:12:59,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:12:59,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006245001] [2020-12-01 15:12:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:12:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:12:59,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:12:59,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:00,156 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 15:13:00,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:00,372 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 15:13:00,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006245001] [2020-12-01 15:13:00,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:00,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2020-12-01 15:13:00,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56228471] [2020-12-01 15:13:00,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:13:00,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:00,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:13:00,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:13:00,377 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 10 states. [2020-12-01 15:13:01,138 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2020-12-01 15:13:01,419 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2020-12-01 15:13:01,702 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2020-12-01 15:13:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:02,305 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-12-01 15:13:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:13:02,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-01 15:13:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:02,307 INFO L225 Difference]: With dead ends: 82 [2020-12-01 15:13:02,307 INFO L226 Difference]: Without dead ends: 60 [2020-12-01 15:13:02,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2020-12-01 15:13:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-01 15:13:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-12-01 15:13:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-01 15:13:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-12-01 15:13:02,323 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 15 [2020-12-01 15:13:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:02,324 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-12-01 15:13:02,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:13:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-12-01 15:13:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:13:02,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:02,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:02,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:13:02,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2132259149, now seen corresponding path program 1 times [2020-12-01 15:13:02,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:02,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856832204] [2020-12-01 15:13:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:13:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:02,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:13:02,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:02,940 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 15:13:02,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:03,252 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 15:13:03,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856832204] [2020-12-01 15:13:03,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:03,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2020-12-01 15:13:03,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910790069] [2020-12-01 15:13:03,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:13:03,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:03,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:13:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:13:03,256 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 10 states. [2020-12-01 15:13:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:03,925 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-12-01 15:13:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:13:03,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-01 15:13:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:03,927 INFO L225 Difference]: With dead ends: 70 [2020-12-01 15:13:03,928 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 15:13:03,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:13:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 15:13:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-12-01 15:13:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-01 15:13:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-01 15:13:03,943 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 18 [2020-12-01 15:13:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:03,943 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-01 15:13:03,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:13:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-01 15:13:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 15:13:03,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:03,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:04,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:13:04,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash 933681081, now seen corresponding path program 1 times [2020-12-01 15:13:04,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:04,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043008981] [2020-12-01 15:13:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:13:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:04,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 15:13:04,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:05,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:13:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:05,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:07,383 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-01 15:13:08,349 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-01 15:13:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:08,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043008981] [2020-12-01 15:13:08,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:13:08,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2020-12-01 15:13:08,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431006962] [2020-12-01 15:13:08,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-01 15:13:08,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-01 15:13:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-12-01 15:13:08,429 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 20 states. [2020-12-01 15:13:11,881 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-12-01 15:13:15,600 WARN L197 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-12-01 15:13:18,431 WARN L197 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2020-12-01 15:13:19,676 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-12-01 15:13:25,124 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-12-01 15:13:31,550 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2020-12-01 15:13:37,763 WARN L197 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-12-01 15:13:38,774 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-12-01 15:13:39,586 WARN L197 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-12-01 15:13:44,333 WARN L197 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-01 15:13:49,912 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 51 DAG size of output: 26 [2020-12-01 15:13:51,232 WARN L197 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-12-01 15:13:57,558 WARN L197 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-01 15:14:02,141 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-12-01 15:14:09,309 WARN L197 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-12-01 15:14:14,270 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 15 [2020-12-01 15:14:24,143 WARN L197 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-01 15:14:24,745 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2020-12-01 15:14:32,825 WARN L197 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-12-01 15:14:40,838 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-01 15:14:50,270 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2020-12-01 15:14:56,275 WARN L197 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-12-01 15:15:05,942 WARN L197 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2020-12-01 15:15:15,562 WARN L197 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-12-01 15:15:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:15:15,660 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2020-12-01 15:15:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-01 15:15:15,666 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 31 [2020-12-01 15:15:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:15:15,672 INFO L225 Difference]: With dead ends: 212 [2020-12-01 15:15:15,672 INFO L226 Difference]: Without dead ends: 186 [2020-12-01 15:15:15,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 112.7s TimeCoverageRelationStatistics Valid=878, Invalid=2200, Unknown=2, NotChecked=0, Total=3080 [2020-12-01 15:15:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-01 15:15:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 81. [2020-12-01 15:15:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-01 15:15:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-12-01 15:15:15,711 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 31 [2020-12-01 15:15:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:15:15,712 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-12-01 15:15:15,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-01 15:15:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-12-01 15:15:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 15:15:15,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:15:15,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:15:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 15:15:15,934 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:15:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:15:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash 217862748, now seen corresponding path program 1 times [2020-12-01 15:15:15,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:15:15,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851115250] [2020-12-01 15:15:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/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 15:15:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:15:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-01 15:15:16,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:15:16,494 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-01 15:15:16,903 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-01 15:15:16,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:15:19,011 WARN L197 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-01 15:15:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:15:19,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:15:20,202 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-01 15:15:20,214 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:15:20,214 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:15:22,072 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-01 15:15:22,090 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:15:22,090 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:15:30,636 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-01 15:15:30,642 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:15:30,643 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:15:33,975 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-01 15:15:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:15:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851115250] [2020-12-01 15:15:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:15:34,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2020-12-01 15:15:34,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993015957] [2020-12-01 15:15:34,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-01 15:15:34,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:15:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-01 15:15:34,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=304, Unknown=3, NotChecked=0, Total=380 [2020-12-01 15:15:34,019 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 20 states. [2020-12-01 15:15:35,002 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-12-01 15:15:35,503 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2020-12-01 15:15:36,406 WARN L197 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-12-01 15:15:42,812 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2020-12-01 15:15:44,218 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-01 15:15:45,445 WARN L197 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2020-12-01 15:15:48,637 WARN L197 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-01 15:15:52,677 WARN L197 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-01 15:15:53,331 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-01 15:15:53,867 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-01 15:15:54,668 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-01 15:15:57,188 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-01 15:15:57,802 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-01 15:15:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:15:57,803 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2020-12-01 15:15:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-01 15:15:57,803 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2020-12-01 15:15:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:15:57,804 INFO L225 Difference]: With dead ends: 112 [2020-12-01 15:15:57,804 INFO L226 Difference]: Without dead ends: 88 [2020-12-01 15:15:57,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=302, Invalid=955, Unknown=3, NotChecked=0, Total=1260 [2020-12-01 15:15:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-01 15:15:57,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-12-01 15:15:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 15:15:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-12-01 15:15:57,820 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 36 [2020-12-01 15:15:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:15:57,820 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-12-01 15:15:57,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-01 15:15:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-12-01 15:15:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 15:15:57,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:15:57,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:15:58,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 15:15:58,037 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:15:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:15:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1087106849, now seen corresponding path program 1 times [2020-12-01 15:15:58,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:15:58,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101106823] [2020-12-01 15:15:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 15:15:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:15:58,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:15:58,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:15:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:15:58,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:15:58,454 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:15:58,454 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:00,085 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:16:00,085 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:01,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101106823] [2020-12-01 15:16:01,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:16:01,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2020-12-01 15:16:01,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006709944] [2020-12-01 15:16:01,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-01 15:16:01,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-01 15:16:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:16:01,036 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 16 states. [2020-12-01 15:16:02,490 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-01 15:16:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:02,611 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-12-01 15:16:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:16:02,611 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-12-01 15:16:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:02,612 INFO L225 Difference]: With dead ends: 88 [2020-12-01 15:16:02,612 INFO L226 Difference]: Without dead ends: 71 [2020-12-01 15:16:02,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-12-01 15:16:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-01 15:16:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-01 15:16:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-01 15:16:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-12-01 15:16:02,624 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 38 [2020-12-01 15:16:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:02,624 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-12-01 15:16:02,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-01 15:16:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-12-01 15:16:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 15:16:02,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:02,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:02,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 15:16:02,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:16:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:02,841 INFO L82 PathProgramCache]: Analyzing trace with hash 881202049, now seen corresponding path program 1 times [2020-12-01 15:16:02,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:02,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114468665] [2020-12-01 15:16:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:02,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 15:16:02,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:03,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:03,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:04,952 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:16:04,953 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:05,128 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-12-01 15:16:05,129 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:05,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114468665] [2020-12-01 15:16:05,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:16:05,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2020-12-01 15:16:05,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914463513] [2020-12-01 15:16:05,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-01 15:16:05,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:05,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-01 15:16:05,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-12-01 15:16:05,148 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 20 states. [2020-12-01 15:16:06,103 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2020-12-01 15:16:06,748 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-12-01 15:16:07,741 WARN L197 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-12-01 15:16:08,453 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-12-01 15:16:09,188 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-01 15:16:09,433 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2020-12-01 15:16:09,599 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-12-01 15:16:10,683 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-01 15:16:11,514 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-12-01 15:16:12,247 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-12-01 15:16:12,519 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-12-01 15:16:13,452 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-01 15:16:13,692 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2020-12-01 15:16:14,041 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-12-01 15:16:14,751 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-01 15:16:15,262 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-12-01 15:16:15,969 WARN L197 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-12-01 15:16:16,384 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-12-01 15:16:16,870 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-01 15:16:18,011 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-12-01 15:16:18,723 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2020-12-01 15:16:19,362 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-12-01 15:16:19,843 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2020-12-01 15:16:20,223 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 14 [2020-12-01 15:16:20,658 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2020-12-01 15:16:21,487 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-01 15:16:22,164 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-12-01 15:16:22,835 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-01 15:16:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:22,874 INFO L93 Difference]: Finished difference Result 252 states and 294 transitions. [2020-12-01 15:16:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-01 15:16:22,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-12-01 15:16:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:22,879 INFO L225 Difference]: With dead ends: 252 [2020-12-01 15:16:22,879 INFO L226 Difference]: Without dead ends: 217 [2020-12-01 15:16:22,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1246, Invalid=2786, Unknown=0, NotChecked=0, Total=4032 [2020-12-01 15:16:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-01 15:16:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2020-12-01 15:16:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-01 15:16:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 173 transitions. [2020-12-01 15:16:22,915 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 173 transitions. Word has length 40 [2020-12-01 15:16:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:22,915 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 173 transitions. [2020-12-01 15:16:22,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-01 15:16:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 173 transitions. [2020-12-01 15:16:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 15:16:22,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:22,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:23,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-01 15:16:23,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:16:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1620339223, now seen corresponding path program 2 times [2020-12-01 15:16:23,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:23,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447814737] [2020-12-01 15:16:23,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c11f46e-1b55-4e87-8f3c-c014d34b8147/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:23,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:23,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:23,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 15:16:23,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:24,012 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-12-01 15:16:24,636 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:24,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:28,747 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-01 15:16:29,607 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-01 15:16:29,611 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:16:29,611 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:30,465 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-01 15:16:31,794 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-01 15:16:33,381 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-01 15:16:35,046 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:16:35,046 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:35,778 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-12-01 15:16:35,778 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:16:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:35,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447814737] [2020-12-01 15:16:35,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:16:35,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2020-12-01 15:16:35,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683102384] [2020-12-01 15:16:35,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-01 15:16:35,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-01 15:16:35,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-12-01 15:16:35,813 INFO L87 Difference]: Start difference. First operand 150 states and 173 transitions. Second operand 30 states. [2020-12-01 15:16:38,714 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2020-12-01 15:16:39,091 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-12-01 15:16:39,547 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-01 15:16:39,810 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-12-01 15:16:40,083 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-01 15:16:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:40,271 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2020-12-01 15:16:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:40,272 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2020-12-01 15:16:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:40,272 INFO L225 Difference]: With dead ends: 154 [2020-12-01 15:16:40,272 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:16:40,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2020-12-01 15:16:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:16:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:16:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:16:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:16:40,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-12-01 15:16:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:40,274 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:16:40,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-01 15:16:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:16:40,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:16:40,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-01 15:16:40,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:16:40,594 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-01 15:16:40,726 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-12-01 15:16:41,549 WARN L197 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-12-01 15:16:43,275 WARN L197 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2020-12-01 15:16:43,749 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-12-01 15:16:44,326 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-12-01 15:16:45,832 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-12-01 15:16:46,331 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-12-01 15:16:46,826 WARN L197 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-12-01 15:16:46,828 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,828 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:16:46,828 INFO L262 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:16:46,828 INFO L262 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L258 CegarLoopResult]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse3 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32))) (.cse6 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse7 (= (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~d~0)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse2 .cse3 .cse4 (= (_ bv1 32) ULTIMATE.start_main_~p~0) .cse5) (and .cse6 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 .cse7 .cse2 .cse3 .cse4 .cse5 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (and .cse6 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse0 .cse1 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)) .cse7 .cse2 .cse4 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse5))) [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L265 CegarLoopResult]: At program point L62(lines 22 63) the Hoare annotation is: true [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L54(lines 54 57) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,829 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,830 INFO L258 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse2 (= (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~d~0)) (.cse7 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (and .cse0 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse7 .cse1 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)) .cse2 .cse3 .cse5 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse6) (and .cse7 .cse0 .cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 .cse4 .cse5 (= (_ bv1 32) ULTIMATE.start_main_~p~0) .cse6))) [2020-12-01 15:16:46,830 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,830 INFO L258 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse2 (= (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~d~0)) (.cse7 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (and .cse0 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse7 .cse1 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)) .cse2 .cse3 .cse5 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse6) (and .cse7 .cse0 .cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 .cse4 .cse5 (= (_ bv1 32) ULTIMATE.start_main_~p~0) .cse6))) [2020-12-01 15:16:46,830 INFO L262 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,830 INFO L258 CegarLoopResult]: At program point L15-5(line 40) the Hoare annotation is: (let ((.cse2 (= (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~d~0)) (.cse7 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (and .cse0 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse7 .cse1 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)) .cse2 .cse3 .cse5 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse6) (and .cse7 .cse0 .cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 .cse4 .cse5 (= (_ bv1 32) ULTIMATE.start_main_~p~0) .cse6))) [2020-12-01 15:16:46,830 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,830 INFO L258 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse16 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse17 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (let ((.cse7 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse9 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (.cse13 (bvudiv (bvmul ULTIMATE.start_main_~B~0 (_ bv4 32)) (_ bv2 32))) (.cse11 (bvudiv ULTIMATE.start_main_~d~0 (_ bv2 32))) (.cse10 (bvmul (bvudiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0)) (.cse0 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse8 (= .cse17 ULTIMATE.start_main_~d~0)) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse14 (bvneg ULTIMATE.start_main_~d~0)) (.cse15 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32))) (.cse12 (bvuge ULTIMATE.start_main_~A~0 .cse16)) (.cse6 (= (_ bv1 32) ULTIMATE.start_main_~p~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse1 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse2 .cse3 .cse8 .cse4 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) .cse7 .cse9) (and .cse1 .cse2 .cse3 .cse8 (= .cse10 .cse11) .cse12 .cse5 .cse6 (= (bvadd (bvneg .cse13) ULTIMATE.start_main_~A~0) ULTIMATE.start_main_~r~0) (= (_ bv2 32) ULTIMATE.start_main_~q~0)) (and (= (bvadd ULTIMATE.start_main_~q~0 (bvmul ULTIMATE.start_main_~p~0 (_ bv4294967295 32))) (_ bv0 32)) .cse1 .cse0 .cse2 .cse3 .cse12 .cse5 (= (bvadd .cse14 ULTIMATE.start_main_~A~0) ULTIMATE.start_main_~r~0) .cse9 (= .cse13 ULTIMATE.start_main_~d~0)) (and (= (bvadd (bvneg .cse11) .cse10 .cse15 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) .cse1 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse0 .cse2 .cse3 .cse8 .cse4 .cse5 (bvuge ULTIMATE.start_main_~r~0 .cse16)) (and (= ULTIMATE.start_main_~A~0 (bvadd .cse14 .cse17 .cse15 ULTIMATE.start_main_~r~0)) .cse1 (bvuge ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~B~0) .cse2 .cse3 (not .cse12) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~A~0 (bvneg (bvudiv .cse16 (_ bv2 32))))) .cse6 (= (_ bv1 32) ULTIMATE.start_main_~q~0))))) [2020-12-01 15:16:46,831 INFO L262 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,831 INFO L258 CegarLoopResult]: At program point L15-9(line 50) the Hoare annotation is: (let ((.cse11 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= (bvadd .cse11 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse1 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse9 (= (_ bv2 32) ULTIMATE.start_main_~p~0)) (.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse4 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32))) (.cse7 (= (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~d~0)) (.cse8 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse6 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse10 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse5 .cse6 (= (_ bv1 32) ULTIMATE.start_main_~p~0)) (and .cse2 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse4 .cse5 .cse7 .cse8 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (= (_ bv0 32) ULTIMATE.start_main_~q~0) .cse9) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (bvuge ULTIMATE.start_main_~A~0 .cse10) .cse6 (= (bvadd (bvneg ULTIMATE.start_main_~d~0) ULTIMATE.start_main_~A~0) ULTIMATE.start_main_~r~0) .cse9 (= (bvudiv (bvmul ULTIMATE.start_main_~B~0 (_ bv4 32)) (_ bv2 32)) ULTIMATE.start_main_~d~0)) (and (= (bvadd (bvneg (bvudiv ULTIMATE.start_main_~d~0 (_ bv2 32))) (bvmul (bvudiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0) .cse11 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 .cse5 .cse7 .cse8 .cse6 (bvuge ULTIMATE.start_main_~r~0 .cse10))))) [2020-12-01 15:16:46,831 INFO L262 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,831 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvule ULTIMATE.start_main_~B~0 (_ bv2 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32)) (= (_ bv1 32) ULTIMATE.start_main_~p~0)) [2020-12-01 15:16:46,831 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L265 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,832 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,833 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,833 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:46,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:16:46,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:46,849 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-01 15:16:46,856 INFO L168 Benchmark]: Toolchain (without parser) took 230413.51 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 33.5 MB in the beginning and 41.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,857 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:46,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.13 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 23.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.85 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 38.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,859 INFO L168 Benchmark]: Boogie Preprocessor took 74.61 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,860 INFO L168 Benchmark]: RCFGBuilder took 704.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 48.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,861 INFO L168 Benchmark]: TraceAbstraction took 229243.49 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 41.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:46,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.8 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.13 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 23.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.85 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 38.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.61 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 704.82 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 48.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 229243.49 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 41.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((~bvadd64(cond, 4294967295bv32) == 0bv32 && ~bvuge32(r, B)) && 1bv32 == cond) && ~bvmul32(p, B) == d) && r == A) && ~bvule32(r, 2bv32)) && ~bvuge32(B, 1bv32)) && 0bv32 == q) && 2bv32 == p) || (((((((((~bvadd64(cond, 4294967295bv32) == 0bv32 && 4bv32 == p) && ~bvule32(B, 2bv32)) && 1bv32 == cond) && ~bvule32(A, 2bv32)) && ~bvmul32(p, B) == d) && r == A) && ~bvuge32(B, 1bv32)) && ~bvuge32(r, ~bvmul32(B, 2bv32))) && 0bv32 == q)) || ((((((((~bvule32(B, 2bv32) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && d == B) && r == A) && ~bvule32(r, 2bv32)) && ~bvuge32(B, 1bv32)) && 1bv32 == p) && 0bv32 == q) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...