./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.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_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 9ec0e5925e997c01ed0feba8438589759f7e6730 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:04:40,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:04:40,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:04:41,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:04:41,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:04:41,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:04:41,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:04:41,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:04:41,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:04:41,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:04:41,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:04:41,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:04:41,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:04:41,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:04:41,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:04:41,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:04:41,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:04:41,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:04:41,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:04:41,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:04:41,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:04:41,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:04:41,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:04:41,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:04:41,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:04:41,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:04:41,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:04:41,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:04:41,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:04:41,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:04:41,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:04:41,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:04:41,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:04:41,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:04:41,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:04:41,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:04:41,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:04:41,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:04:41,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:04:41,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:04:41,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:04:41,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:04:41,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:04:41,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:04:41,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:04:41,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:04:41,305 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:04:41,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:04:41,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:04:41,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:04:41,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:04:41,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:04:41,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:04:41,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:04:41,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:04:41,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:04:41,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:04:41,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:04:41,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:04:41,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:04:41,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:04:41,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:04:41,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:04:41,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:04:41,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:04:41,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:04:41,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:04:41,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:04:41,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:04:41,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:04:41,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:04:41,314 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_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ec0e5925e997c01ed0feba8438589759f7e6730 [2020-12-01 15:04:41,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:04:41,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:04:41,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:04:41,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:04:41,757 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:04:41,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2020-12-01 15:04:41,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/data/c28af9673/f93def2b031344b3ba476966d3ff1353/FLAGeb437dbe6 [2020-12-01 15:04:42,355 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:04:42,356 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2020-12-01 15:04:42,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/data/c28af9673/f93def2b031344b3ba476966d3ff1353/FLAGeb437dbe6 [2020-12-01 15:04:42,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/data/c28af9673/f93def2b031344b3ba476966d3ff1353 [2020-12-01 15:04:42,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:04:42,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:04:42,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:04:42,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:04:42,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:04:42,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:04:42" (1/1) ... [2020-12-01 15:04:42,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563881cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:42, skipping insertion in model container [2020-12-01 15:04:42,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:04:42" (1/1) ... [2020-12-01 15:04:42,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:04:42,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:04:43,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:04:43,018 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:04:43,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:04:43,077 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:04:43,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43 WrapperNode [2020-12-01 15:04:43,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:04:43,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:04:43,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:04:43,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:04:43,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:04:43,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:04:43,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:04:43,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:04:43,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... [2020-12-01 15:04:43,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:04:43,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:04:43,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:04:43,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:04:43,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:04:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:04:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:04:43,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:04:43,552 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:04:43,552 INFO L298 CfgBuilder]: Removed 35 assume(true) statements. [2020-12-01 15:04:43,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:04:43 BoogieIcfgContainer [2020-12-01 15:04:43,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:04:43,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:04:43,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:04:43,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:04:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:04:42" (1/3) ... [2020-12-01 15:04:43,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226aa4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:04:43, skipping insertion in model container [2020-12-01 15:04:43,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:04:43" (2/3) ... [2020-12-01 15:04:43,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226aa4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:04:43, skipping insertion in model container [2020-12-01 15:04:43,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:04:43" (3/3) ... [2020-12-01 15:04:43,573 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2020-12-01 15:04:43,586 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:04:43,590 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-01 15:04:43,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-01 15:04:43,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:04:43,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:04:43,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:04:43,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:04:43,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:04:43,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:04:43,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:04:43,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:04:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-01 15:04:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:04:43,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:43,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:43,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash -171753097, now seen corresponding path program 1 times [2020-12-01 15:04:43,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:43,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386376974] [2020-12-01 15:04:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:43,812 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 15:04:43,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386376974] [2020-12-01 15:04:43,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:43,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:04:43,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593912591] [2020-12-01 15:04:43,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:04:43,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:04:43,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:04:43,834 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-01 15:04:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:43,853 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2020-12-01 15:04:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:04:43,854 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-01 15:04:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:43,862 INFO L225 Difference]: With dead ends: 79 [2020-12-01 15:04:43,863 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 15:04:43,866 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 15:04:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 15:04:43,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 15:04:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 15:04:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-01 15:04:43,900 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2020-12-01 15:04:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:43,900 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-01 15:04:43,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:04:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-01 15:04:43,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:04:43,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:43,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:43,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:04:43,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1454174487, now seen corresponding path program 1 times [2020-12-01 15:04:43,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:43,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81837012] [2020-12-01 15:04:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:43,937 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:43,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187524493] [2020-12-01 15:04:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:44,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:04:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:44,130 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 15:04:44,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81837012] [2020-12-01 15:04:44,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:44,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187524493] [2020-12-01 15:04:44,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:44,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:04:44,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164036838] [2020-12-01 15:04:44,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:04:44,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:04:44,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:04:44,135 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-01 15:04:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:44,242 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-01 15:04:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:04:44,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:04:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:44,244 INFO L225 Difference]: With dead ends: 64 [2020-12-01 15:04:44,244 INFO L226 Difference]: Without dead ends: 60 [2020-12-01 15:04:44,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:04:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-01 15:04:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-12-01 15:04:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:04:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-01 15:04:44,254 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2020-12-01 15:04:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:44,255 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-01 15:04:44,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:04:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-01 15:04:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:04:44,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:44,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:44,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:04:44,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2020-12-01 15:04:44,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:44,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949619184] [2020-12-01 15:04:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:44,497 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:44,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350953313] [2020-12-01 15:04:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:44,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-01 15:04:44,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:44,859 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 15:04:44,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949619184] [2020-12-01 15:04:44,859 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350953313] [2020-12-01 15:04:44,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:44,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:04:44,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530210073] [2020-12-01 15:04:44,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:04:44,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:04:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:04:44,862 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2020-12-01 15:04:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:45,297 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-01 15:04:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:04:45,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-01 15:04:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:45,300 INFO L225 Difference]: With dead ends: 60 [2020-12-01 15:04:45,301 INFO L226 Difference]: Without dead ends: 58 [2020-12-01 15:04:45,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:04:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-01 15:04:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-12-01 15:04:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-01 15:04:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-01 15:04:45,327 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-12-01 15:04:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:45,327 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-01 15:04:45,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:04:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-01 15:04:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:04:45,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:45,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:45,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:45,530 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1839991917, now seen corresponding path program 1 times [2020-12-01 15:04:45,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:45,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342190199] [2020-12-01 15:04:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:45,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:45,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616976738] [2020-12-01 15:04:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-01 15:04:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:45,958 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 15:04:45,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342190199] [2020-12-01 15:04:45,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:45,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616976738] [2020-12-01 15:04:45,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:45,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 15:04:45,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419904766] [2020-12-01 15:04:45,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:04:45,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:04:45,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:04:45,962 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 12 states. [2020-12-01 15:04:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:46,436 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-01 15:04:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:04:46,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-12-01 15:04:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:46,438 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:04:46,438 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 15:04:46,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:04:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 15:04:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-12-01 15:04:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-01 15:04:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-01 15:04:46,446 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2020-12-01 15:04:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:46,446 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-01 15:04:46,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:04:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-01 15:04:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:04:46,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:46,448 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:46,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:46,662 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:46,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:46,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1297656650, now seen corresponding path program 1 times [2020-12-01 15:04:46,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:46,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163035213] [2020-12-01 15:04:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:46,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:46,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916191609] [2020-12-01 15:04:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:46,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:04:46,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:04:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163035213] [2020-12-01 15:04:46,893 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916191609] [2020-12-01 15:04:46,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:46,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:04:46,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798574383] [2020-12-01 15:04:46,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:04:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:04:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:04:46,895 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 8 states. [2020-12-01 15:04:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:47,102 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-12-01 15:04:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:04:47,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-01 15:04:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:47,104 INFO L225 Difference]: With dead ends: 99 [2020-12-01 15:04:47,104 INFO L226 Difference]: Without dead ends: 72 [2020-12-01 15:04:47,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:04:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-01 15:04:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-12-01 15:04:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-01 15:04:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-12-01 15:04:47,113 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 20 [2020-12-01 15:04:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:47,113 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-12-01 15:04:47,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:04:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-12-01 15:04:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:04:47,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:47,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:47,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:47,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:47,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1294482198, now seen corresponding path program 1 times [2020-12-01 15:04:47,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:47,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151011895] [2020-12-01 15:04:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:47,382 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:47,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400953371] [2020-12-01 15:04:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:47,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:04:47,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:47,568 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 15:04:47,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151011895] [2020-12-01 15:04:47,569 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:47,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400953371] [2020-12-01 15:04:47,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:47,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:04:47,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837647053] [2020-12-01 15:04:47,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:04:47,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:04:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:04:47,571 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-12-01 15:04:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:47,795 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-12-01 15:04:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:04:47,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-01 15:04:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:47,796 INFO L225 Difference]: With dead ends: 72 [2020-12-01 15:04:47,796 INFO L226 Difference]: Without dead ends: 70 [2020-12-01 15:04:47,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:04:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-01 15:04:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-12-01 15:04:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-01 15:04:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-12-01 15:04:47,806 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 21 [2020-12-01 15:04:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:47,806 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-12-01 15:04:47,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:04:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-12-01 15:04:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:04:47,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:47,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:48,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-01 15:04:48,034 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:48,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1542934695, now seen corresponding path program 1 times [2020-12-01 15:04:48,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:48,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833152367] [2020-12-01 15:04:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:48,048 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:48,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971557147] [2020-12-01 15:04:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/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 15:04:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:48,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:04:48,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:48,282 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 15:04:48,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833152367] [2020-12-01 15:04:48,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:48,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971557147] [2020-12-01 15:04:48,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:48,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-01 15:04:48,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934071016] [2020-12-01 15:04:48,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:04:48,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:48,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:04:48,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:04:48,285 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 10 states. [2020-12-01 15:04:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:48,826 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2020-12-01 15:04:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:04:48,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-01 15:04:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:48,831 INFO L225 Difference]: With dead ends: 103 [2020-12-01 15:04:48,831 INFO L226 Difference]: Without dead ends: 101 [2020-12-01 15:04:48,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:04:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-01 15:04:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2020-12-01 15:04:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-01 15:04:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2020-12-01 15:04:48,843 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 23 [2020-12-01 15:04:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:48,844 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2020-12-01 15:04:48,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:04:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2020-12-01 15:04:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:04:48,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:48,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:49,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:49,067 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash -963353371, now seen corresponding path program 1 times [2020-12-01 15:04:49,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:49,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990130530] [2020-12-01 15:04:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:49,082 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:49,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60422198] [2020-12-01 15:04:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:49,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-01 15:04:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:49,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:04:49,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:04:49,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:04:49,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:04:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:04:50,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990130530] [2020-12-01 15:04:50,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:50,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60422198] [2020-12-01 15:04:50,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:04:50,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-01 15:04:50,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206803390] [2020-12-01 15:04:50,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-01 15:04:50,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-01 15:04:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:04:50,023 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 17 states. [2020-12-01 15:04:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:51,164 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2020-12-01 15:04:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-01 15:04:51,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-12-01 15:04:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:51,168 INFO L225 Difference]: With dead ends: 140 [2020-12-01 15:04:51,168 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 15:04:51,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2020-12-01 15:04:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 15:04:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 97. [2020-12-01 15:04:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-01 15:04:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-12-01 15:04:51,200 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 32 [2020-12-01 15:04:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:51,201 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-12-01 15:04:51,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-01 15:04:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-12-01 15:04:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:04:51,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:51,211 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, 1] [2020-12-01 15:04:51,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:51,434 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash 377688240, now seen corresponding path program 1 times [2020-12-01 15:04:51,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:51,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397813139] [2020-12-01 15:04:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:51,449 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:51,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741404994] [2020-12-01 15:04:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:51,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:04:51,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:04:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397813139] [2020-12-01 15:04:51,681 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741404994] [2020-12-01 15:04:51,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:51,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 15:04:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884381555] [2020-12-01 15:04:51,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:04:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:04:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:04:51,683 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 9 states. [2020-12-01 15:04:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:52,048 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2020-12-01 15:04:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:04:52,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-01 15:04:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:52,051 INFO L225 Difference]: With dead ends: 145 [2020-12-01 15:04:52,051 INFO L226 Difference]: Without dead ends: 89 [2020-12-01 15:04:52,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:04:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-01 15:04:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2020-12-01 15:04:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-01 15:04:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-12-01 15:04:52,065 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 32 [2020-12-01 15:04:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:52,065 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-12-01 15:04:52,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:04:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-12-01 15:04:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 15:04:52,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:52,066 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, 1, 1] [2020-12-01 15:04:52,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-01 15:04:52,282 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1227018041, now seen corresponding path program 1 times [2020-12-01 15:04:52,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:52,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48181049] [2020-12-01 15:04:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:52,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:52,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083511653] [2020-12-01 15:04:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:52,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:04:52,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:04:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48181049] [2020-12-01 15:04:52,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083511653] [2020-12-01 15:04:52,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:04:52,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:04:52,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629450882] [2020-12-01 15:04:52,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:04:52,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:52,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:04:52,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:04:52,427 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 5 states. [2020-12-01 15:04:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:52,489 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2020-12-01 15:04:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:04:52,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-01 15:04:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:52,491 INFO L225 Difference]: With dead ends: 152 [2020-12-01 15:04:52,491 INFO L226 Difference]: Without dead ends: 101 [2020-12-01 15:04:52,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:04:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-01 15:04:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2020-12-01 15:04:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:04:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2020-12-01 15:04:52,506 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 33 [2020-12-01 15:04:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:52,508 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2020-12-01 15:04:52,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:04:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2020-12-01 15:04:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 15:04:52,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:04:52,512 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:04:52,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:52,722 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:04:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:04:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash 379637857, now seen corresponding path program 1 times [2020-12-01 15:04:52,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:04:52,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180567554] [2020-12-01 15:04:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:04:52,743 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:04:52,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083921647] [2020-12-01 15:04:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:04:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:04:52,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:04:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:04:53,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180567554] [2020-12-01 15:04:53,006 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:04:53,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083921647] [2020-12-01 15:04:53,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:04:53,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:04:53,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357789749] [2020-12-01 15:04:53,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:04:53,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:04:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:04:53,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:04:53,010 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 10 states. [2020-12-01 15:04:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:04:53,182 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2020-12-01 15:04:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:04:53,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-01 15:04:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:04:53,182 INFO L225 Difference]: With dead ends: 89 [2020-12-01 15:04:53,183 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:04:53,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:04:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:04:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:04:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:04:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:04:53,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-12-01 15:04:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:04:53,184 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:04:53,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:04:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:04:53,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:04:53,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:04:53,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:04:53,681 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-12-01 15:04:53,811 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-12-01 15:04:54,080 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-01 15:04:54,260 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-12-01 15:04:54,386 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2020-12-01 15:04:54,484 INFO L258 CegarLoopResult]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (<= ULTIMATE.start_main_~b~0 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) (let ((.cse3 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)) (.cse4 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (let ((.cse2 (+ .cse3 .cse4))) (and (< (* 2 ULTIMATE.start_main_~c~0) 1) (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (<= ULTIMATE.start_main_~x~0 1) (<= 0 ULTIMATE.start_main_~c~0) (= (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) 1) (= ULTIMATE.start_main_~a~0 .cse2) (< (* 2 ULTIMATE.start_main_~b~0) 1) (<= 0 ULTIMATE.start_main_~b~0) (<= .cse2 ULTIMATE.start_main_~x~0) (< (div (+ (* (- 1) ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* (- 1) ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (- 1)) (- 2)) (+ .cse3 .cse4 1)) .cse0 (<= 1 ULTIMATE.start_main_~v~0) .cse1 (= ULTIMATE.start_main_~p~0 0)))))) [2020-12-01 15:04:54,484 INFO L262 CegarLoopResult]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2020-12-01 15:04:54,484 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:04:54,484 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-01 15:04:54,485 INFO L258 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~k~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-01 15:04:54,485 INFO L262 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-12-01 15:04:54,485 INFO L258 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-01 15:04:54,485 INFO L262 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-12-01 15:04:54,485 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~k~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-01 15:04:54,485 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-01 15:04:54,485 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L258 CegarLoopResult]: At program point L11-7(lines 55 56) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L265 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: true [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-01 15:04:54,486 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-12-01 15:04:54,487 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L258 CegarLoopResult]: At program point L49-2(lines 49 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)) [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-12-01 15:04:54,488 INFO L262 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-12-01 15:04:54,489 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:04:54,489 INFO L265 CegarLoopResult]: At program point L75(lines 18 76) the Hoare annotation is: true [2020-12-01 15:04:54,489 INFO L258 CegarLoopResult]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~r~0 0)) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= ULTIMATE.start_main_~a~0 1))) (or (and (= ULTIMATE.start_main_~k~0 1) (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~v~0) .cse5 .cse6 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (and .cse0 .cse1 (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~c~0) .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0)))) [2020-12-01 15:04:54,489 INFO L262 CegarLoopResult]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2020-12-01 15:04:54,489 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:04:54,489 INFO L262 CegarLoopResult]: For program point L43(lines 43 44) no Hoare annotation was computed. [2020-12-01 15:04:54,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:04:54 BoogieIcfgContainer [2020-12-01 15:04:54,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:04:54,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:04:54,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:04:54,514 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:04:54,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:04:43" (3/4) ... [2020-12-01 15:04:54,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:04:54,531 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-01 15:04:54,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:04:54,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:04:54,533 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:04:54,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c295eb30-4a97-47c9-8bac-47a4ebe695c3/bin/uautomizer/witness.graphml [2020-12-01 15:04:54,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:04:54,585 INFO L168 Benchmark]: Toolchain (without parser) took 11828.04 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 71.9 MB in the beginning and 147.6 MB in the end (delta: -75.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,586 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:04:54,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.58 ms. Allocated memory is still 100.7 MB. Free memory was 71.9 MB in the beginning and 77.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.17 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,587 INFO L168 Benchmark]: Boogie Preprocessor took 26.31 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,588 INFO L168 Benchmark]: RCFGBuilder took 398.03 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 57.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,589 INFO L168 Benchmark]: TraceAbstraction took 10954.33 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 57.3 MB in the beginning and 151.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,589 INFO L168 Benchmark]: Witness Printer took 70.39 ms. Allocated memory is still 211.8 MB. Free memory was 151.8 MB in the beginning and 147.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:04:54,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 45.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.58 ms. Allocated memory is still 100.7 MB. Free memory was 71.9 MB in the beginning and 77.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.17 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.31 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 398.03 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 57.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10954.33 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 57.3 MB in the beginning and 151.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 16.1 GB. * Witness Printer took 70.39 ms. Allocated memory is still 211.8 MB. Free memory was 151.8 MB in the beginning and 147.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((a == x && p == 1) && v <= c) && b == y) && d == 1) && b <= c) && k == 0) && r == 0) && s == 1) && 1 <= v) && q == 0) && cond == 1) && a <= 1) && c <= x) && 1 <= b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((a == x && p == 1) && v <= c) && b == y) && d == 1) && b <= c) && k == 0) && 1 == cond) && r == 0) && s == 1) && q == 0) && 1 <= v) && cond == 1) && a <= 1) && c <= x) && 1 <= b - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((a == x && p == 1) && v <= c) && b == y) && d == 1) && b <= c) && k == 0) && 1 == cond) && r == 0) && s == 1) && 1 <= v) && q == 0) && cond == 1) && a <= 1) && c <= x) && 1 <= b - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((1 <= y && b <= 1) && a == x) && y <= 1) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && cond == 1) && a <= 1) && 1 <= b) || (((((((((((((2 * c < 1 && s + r == 0) && x <= 1) && 0 <= c) && q + p == 1) && a == p * x + r * y) && 2 * b < 1) && 0 <= b) && p * x + r * y <= x) && (-1 * p * x + -1 * r * y + -1) / -2 < p * x + r * y + 1) && 1 <= y) && 1 <= v) && cond == 1) && p == 0) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((a == x && p == 1) && v <= c) && b == y) && d == 1) && b <= c) && k == 0) && r == 0) && 1 == cond) && s == 1) && q == 0) && 1 <= v) && cond == 1) && a <= 1) && c <= x) && 1 <= b - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && 0 <= c) && v <= b) && a == x) && p == 1) && b == y) && c < b) && r == 0) && s == 1) && q == 0) && 1 <= v) && cond == 1) && a <= 1) && b <= x) || (((((((((((((a == x && p == 1) && 1 <= y) && b <= 1) && k == 0) && y <= 1) && r == 0) && s == 1) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && c <= x) && 1 <= b) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (((((((((((((a == x && p == 1) && v <= c) && d == 1) && b <= c) && b == y) && k == 0) && r == 0) && s == 1) && q == 0) && 1 <= v) && cond == 1) && a <= 1) && c <= x) && 1 <= b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 2050 SDslu, 819 SDs, 0 SdLazy, 1007 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred 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, 11 MinimizatonAttempts, 141 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 20 NumberOfFragments, 447 HoareAnnotationTreeSize, 9 FomulaSimplifications, 933 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 352 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 67339 SizeOfPredicates, 103 NumberOfNonLiveVariables, 1117 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 28/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...