./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/sqrt1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/sqrt1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 437161df08265e796d7ea8b5853882d845f4b1fb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:35:07,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:35:07,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:35:07,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:35:07,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:35:07,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:35:07,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:35:07,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:35:07,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:35:07,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:35:07,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:35:07,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:35:07,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:35:07,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:35:07,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:35:07,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:35:07,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:35:07,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:35:07,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:35:07,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:35:07,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:35:07,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:35:07,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:35:07,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:35:07,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:35:07,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:35:07,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:35:07,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:35:07,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:35:07,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:35:07,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:35:07,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:35:07,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:35:07,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:35:07,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:35:07,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:35:07,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:35:07,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:35:07,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:35:07,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:35:07,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:35:07,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:35:07,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:35:07,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:35:07,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:35:07,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:35:07,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:35:07,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:35:07,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:35:07,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:35:07,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:35:07,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:35:07,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:35:07,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:35:07,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:35:07,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:35:07,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:35:07,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:35:07,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:35:07,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:35:07,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:35:07,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:35:07,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:35:07,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:35:07,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:35:07,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:35:07,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:35:07,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:35:07,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:35:07,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:35:07,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:35:07,243 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 437161df08265e796d7ea8b5853882d845f4b1fb [2020-10-25 22:35:07,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:35:07,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:35:07,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:35:07,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:35:07,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:35:07,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/sqrt1.c [2020-10-25 22:35:07,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a771b82/c6d930507f5c440db85cc8a21b8f5a06/FLAG2fa5f21c2 [2020-10-25 22:35:08,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:35:08,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/sqrt1.c [2020-10-25 22:35:08,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a771b82/c6d930507f5c440db85cc8a21b8f5a06/FLAG2fa5f21c2 [2020-10-25 22:35:08,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a771b82/c6d930507f5c440db85cc8a21b8f5a06 [2020-10-25 22:35:08,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:35:08,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:35:08,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:35:08,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:35:08,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:35:08,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:35:08" (1/1) ... [2020-10-25 22:35:08,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c209f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:08, skipping insertion in model container [2020-10-25 22:35:08,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:35:08" (1/1) ... [2020-10-25 22:35:08,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:35:08,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:35:09,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:35:09,046 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:35:09,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:35:09,083 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:35:09,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09 WrapperNode [2020-10-25 22:35:09,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:35:09,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:35:09,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:35:09,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:35:09,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:35:09,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:35:09,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:35:09,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:35:09,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... [2020-10-25 22:35:09,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:35:09,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:35:09,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:35:09,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:35:09,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:35:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:35:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:35:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:35:09,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:35:09,501 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-10-25 22:35:09,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:35:09 BoogieIcfgContainer [2020-10-25 22:35:09,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:35:09,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:35:09,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:35:09,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:35:09,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:35:08" (1/3) ... [2020-10-25 22:35:09,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462c8148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:35:09, skipping insertion in model container [2020-10-25 22:35:09,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:35:09" (2/3) ... [2020-10-25 22:35:09,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462c8148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:35:09, skipping insertion in model container [2020-10-25 22:35:09,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:35:09" (3/3) ... [2020-10-25 22:35:09,515 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2020-10-25 22:35:09,530 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:35:09,536 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-25 22:35:09,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-25 22:35:09,583 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:35:09,584 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:35:09,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:35:09,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:35:09,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:35:09,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:35:09,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:35:09,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:35:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-25 22:35:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-25 22:35:09,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:09,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-25 22:35:09,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-10-25 22:35:09,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:09,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130437472] [2020-10-25 22:35:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:09,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130437472] [2020-10-25 22:35:09,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:35:09,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:35:09,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824702661] [2020-10-25 22:35:09,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:35:09,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:35:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:35:09,915 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-25 22:35:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:10,156 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-10-25 22:35:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:35:10,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-25 22:35:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:10,174 INFO L225 Difference]: With dead ends: 85 [2020-10-25 22:35:10,175 INFO L226 Difference]: Without dead ends: 48 [2020-10-25 22:35:10,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-25 22:35:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2020-10-25 22:35:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-25 22:35:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-25 22:35:10,249 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 5 [2020-10-25 22:35:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:10,249 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-25 22:35:10,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:35:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-25 22:35:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:35:10,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:10,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:35:10,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:35:10,252 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:10,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1810846125, now seen corresponding path program 1 times [2020-10-25 22:35:10,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:10,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140544397] [2020-10-25 22:35:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:10,294 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:10,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654082176] [2020-10-25 22:35:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 22:35:10,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:10,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140544397] [2020-10-25 22:35:10,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:10,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654082176] [2020-10-25 22:35:10,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:35:10,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:35:10,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240673999] [2020-10-25 22:35:10,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:35:10,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:10,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:35:10,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:35:10,424 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2020-10-25 22:35:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:10,517 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-25 22:35:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:35:10,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-25 22:35:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:10,520 INFO L225 Difference]: With dead ends: 48 [2020-10-25 22:35:10,520 INFO L226 Difference]: Without dead ends: 44 [2020-10-25 22:35:10,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-25 22:35:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-25 22:35:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-25 22:35:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-25 22:35:10,532 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 7 [2020-10-25 22:35:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:10,532 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-25 22:35:10,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:35:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-25 22:35:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:35:10,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:10,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:35:10,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:35:10,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:10,752 INFO L82 PathProgramCache]: Analyzing trace with hash 761557936, now seen corresponding path program 1 times [2020-10-25 22:35:10,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153891204] [2020-10-25 22:35:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:10,766 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:10,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109852798] [2020-10-25 22:35:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:10,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 22:35:10,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:10,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153891204] [2020-10-25 22:35:10,856 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:10,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109852798] [2020-10-25 22:35:10,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:35:10,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:35:10,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424177421] [2020-10-25 22:35:10,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:35:10,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:10,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:35:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:35:10,867 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2020-10-25 22:35:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:10,998 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-25 22:35:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:35:10,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-25 22:35:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:11,000 INFO L225 Difference]: With dead ends: 45 [2020-10-25 22:35:11,000 INFO L226 Difference]: Without dead ends: 35 [2020-10-25 22:35:11,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-25 22:35:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-25 22:35:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-25 22:35:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-10-25 22:35:11,013 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 9 [2020-10-25 22:35:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:11,013 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-10-25 22:35:11,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:35:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-10-25 22:35:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:35:11,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:11,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:35:11,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:11,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1561093752, now seen corresponding path program 1 times [2020-10-25 22:35:11,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:11,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693115061] [2020-10-25 22:35:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:11,234 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:11,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195045280] [2020-10-25 22:35:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:11,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 22:35:11,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:11,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693115061] [2020-10-25 22:35:11,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:11,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195045280] [2020-10-25 22:35:11,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:11,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 22:35:11,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851345287] [2020-10-25 22:35:11,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:35:11,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:35:11,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:11,330 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 5 states. [2020-10-25 22:35:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:11,445 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-25 22:35:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:35:11,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-25 22:35:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:11,446 INFO L225 Difference]: With dead ends: 59 [2020-10-25 22:35:11,446 INFO L226 Difference]: Without dead ends: 55 [2020-10-25 22:35:11,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:35:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-25 22:35:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-10-25 22:35:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-25 22:35:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-25 22:35:11,455 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 12 [2020-10-25 22:35:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:11,455 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-25 22:35:11,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:35:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-25 22:35:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:35:11,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:11,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:35:11,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:11,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:11,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1267695675, now seen corresponding path program 1 times [2020-10-25 22:35:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:11,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584406022] [2020-10-25 22:35:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:11,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:11,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187799587] [2020-10-25 22:35:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-25 22:35:11,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584406022] [2020-10-25 22:35:11,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:11,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187799587] [2020-10-25 22:35:11,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:11,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 22:35:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120302116] [2020-10-25 22:35:11,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:35:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:11,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:35:11,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:11,774 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-10-25 22:35:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:11,879 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-25 22:35:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:35:11,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-25 22:35:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:11,881 INFO L225 Difference]: With dead ends: 55 [2020-10-25 22:35:11,881 INFO L226 Difference]: Without dead ends: 51 [2020-10-25 22:35:11,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:35:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-25 22:35:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-25 22:35:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 22:35:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-25 22:35:11,890 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 14 [2020-10-25 22:35:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:11,891 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-25 22:35:11,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:35:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-25 22:35:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 22:35:11,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:11,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-25 22:35:12,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:12,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:12,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1514981698, now seen corresponding path program 1 times [2020-10-25 22:35:12,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:12,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456296721] [2020-10-25 22:35:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:12,120 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:12,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10366938] [2020-10-25 22:35:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:35:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 22:35:12,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456296721] [2020-10-25 22:35:12,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10366938] [2020-10-25 22:35:12,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:12,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 22:35:12,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386170728] [2020-10-25 22:35:12,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:35:12,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:12,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:35:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:12,245 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-10-25 22:35:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:12,408 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-25 22:35:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:35:12,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-25 22:35:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:12,410 INFO L225 Difference]: With dead ends: 52 [2020-10-25 22:35:12,410 INFO L226 Difference]: Without dead ends: 42 [2020-10-25 22:35:12,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:35:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-25 22:35:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-25 22:35:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 22:35:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-25 22:35:12,424 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 16 [2020-10-25 22:35:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:12,425 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-25 22:35:12,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:35:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-25 22:35:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 22:35:12,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:12,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-25 22:35:12,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-25 22:35:12,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:12,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1297538902, now seen corresponding path program 2 times [2020-10-25 22:35:12,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:12,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751169312] [2020-10-25 22:35:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:12,657 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:12,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817938085] [2020-10-25 22:35:12,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:12,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:35:12,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:35:12,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-25 22:35:12,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:12,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751169312] [2020-10-25 22:35:12,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:12,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817938085] [2020-10-25 22:35:12,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:12,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-25 22:35:12,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494315930] [2020-10-25 22:35:12,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:35:12,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:12,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:35:12,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:35:12,790 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 6 states. [2020-10-25 22:35:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:12,943 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-10-25 22:35:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 22:35:12,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-25 22:35:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:12,946 INFO L225 Difference]: With dead ends: 66 [2020-10-25 22:35:12,946 INFO L226 Difference]: Without dead ends: 62 [2020-10-25 22:35:12,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:35:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-25 22:35:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-10-25 22:35:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-25 22:35:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-25 22:35:12,955 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 19 [2020-10-25 22:35:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:12,955 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-25 22:35:12,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:35:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-25 22:35:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 22:35:12,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:12,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-25 22:35:13,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:13,172 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1394182675, now seen corresponding path program 2 times [2020-10-25 22:35:13,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:13,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554386357] [2020-10-25 22:35:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:13,184 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:13,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734401736] [2020-10-25 22:35:13,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:13,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:35:13,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:35:13,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-25 22:35:13,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:35:13,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554386357] [2020-10-25 22:35:13,298 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:13,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734401736] [2020-10-25 22:35:13,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:13,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-25 22:35:13,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548473573] [2020-10-25 22:35:13,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:35:13,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:35:13,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:35:13,301 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-10-25 22:35:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:13,512 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-10-25 22:35:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:35:13,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-25 22:35:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:13,514 INFO L225 Difference]: With dead ends: 62 [2020-10-25 22:35:13,514 INFO L226 Difference]: Without dead ends: 58 [2020-10-25 22:35:13,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:35:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-25 22:35:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-25 22:35:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-25 22:35:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-25 22:35:13,533 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 21 [2020-10-25 22:35:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:13,535 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-25 22:35:13,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:35:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-25 22:35:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 22:35:13,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:13,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-25 22:35:13,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:13,752 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:13,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:13,753 INFO L82 PathProgramCache]: Analyzing trace with hash 220432368, now seen corresponding path program 2 times [2020-10-25 22:35:13,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:13,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466827729] [2020-10-25 22:35:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:13,766 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:13,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402197752] [2020-10-25 22:35:13,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:13,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 22:35:13,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:35:13,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-25 22:35:13,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:13,851 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-25 22:35:13,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:13,899 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-25 22:35:13,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:15,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-25 22:35:22,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466827729] [2020-10-25 22:35:22,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:22,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402197752] [2020-10-25 22:35:22,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:35:22,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 22:35:22,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467910088] [2020-10-25 22:35:22,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 22:35:22,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 22:35:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:35:22,135 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 7 states. [2020-10-25 22:35:22,385 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-10-25 22:35:30,868 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-10-25 22:35:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:35,289 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-25 22:35:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 22:35:35,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-25 22:35:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:35,292 INFO L225 Difference]: With dead ends: 52 [2020-10-25 22:35:35,292 INFO L226 Difference]: Without dead ends: 50 [2020-10-25 22:35:35,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-25 22:35:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-25 22:35:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-25 22:35:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-25 22:35:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-25 22:35:35,309 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 23 [2020-10-25 22:35:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:35,309 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-25 22:35:35,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 22:35:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-25 22:35:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 22:35:35,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:35,312 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-10-25 22:35:35,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-25 22:35:35,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash -98440648, now seen corresponding path program 3 times [2020-10-25 22:35:35,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:35,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495488303] [2020-10-25 22:35:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:35,528 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:35,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173498285] [2020-10-25 22:35:35,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:35,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-25 22:35:35,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:35:35,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-25 22:35:35,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:35,624 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-25 22:35:35,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-25 22:35:35,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495488303] [2020-10-25 22:35:35,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:35,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173498285] [2020-10-25 22:35:35,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 22:35:35,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 22:35:35,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752386642] [2020-10-25 22:35:35,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:35:35,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:35:35,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:35:35,688 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-10-25 22:35:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:35,873 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-10-25 22:35:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:35:35,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-25 22:35:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:35,876 INFO L225 Difference]: With dead ends: 50 [2020-10-25 22:35:35,876 INFO L226 Difference]: Without dead ends: 46 [2020-10-25 22:35:35,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:35:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-25 22:35:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-25 22:35:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-25 22:35:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-25 22:35:35,885 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 26 [2020-10-25 22:35:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-25 22:35:35,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:35:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-25 22:35:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:35:35,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:35:35,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-10-25 22:35:36,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:36,101 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:35:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:35:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -111995909, now seen corresponding path program 3 times [2020-10-25 22:35:36,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:35:36,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732052592] [2020-10-25 22:35:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:35:36,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 22:35:36,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659492043] [2020-10-25 22:35:36,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 22:35:36,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-25 22:35:36,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:35:36,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-25 22:35:36,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:35:36,216 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-25 22:35:36,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:36,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:36,611 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-25 22:35:36,618 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-25 22:35:36,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:35:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-25 22:35:36,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732052592] [2020-10-25 22:35:36,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 22:35:36,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659492043] [2020-10-25 22:35:36,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:35:36,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 22:35:36,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590223681] [2020-10-25 22:35:36,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 22:35:36,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:35:36,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 22:35:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:35:36,843 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 7 states. [2020-10-25 22:35:44,552 WARN L193 SmtUtils]: Spent 7.10 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-25 22:35:45,192 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-10-25 22:35:47,718 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-25 22:35:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:35:47,872 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-25 22:35:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:35:47,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-25 22:35:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:35:47,873 INFO L225 Difference]: With dead ends: 46 [2020-10-25 22:35:47,874 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:35:47,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:35:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:35:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:35:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:35:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:35:47,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-25 22:35:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:35:47,875 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:35:47,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 22:35:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:35:47,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:35:48,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:35:48,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:35:48,488 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-10-25 22:35:59,039 WARN L193 SmtUtils]: Spent 10.55 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-25 22:36:07,595 WARN L193 SmtUtils]: Spent 8.56 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-10-25 22:36:19,044 WARN L193 SmtUtils]: Spent 11.45 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-10-25 22:36:29,162 WARN L193 SmtUtils]: Spent 10.12 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-10-25 22:36:41,981 WARN L193 SmtUtils]: Spent 12.81 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:36:41,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:36:41,985 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 40) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-10-25 22:36:41,985 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 40) no Hoare annotation was computed. [2020-10-25 22:36:41,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:41,985 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,985 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-25 22:36:41,985 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,985 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse1 2) (* .cse1 .cse1) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-25 22:36:41,985 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,986 INFO L270 CegarLoopResult]: At program point L12-5(lines 34 35) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-25 22:36:41,986 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,986 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-10-25 22:36:41,987 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,987 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))))) [2020-10-25 22:36:41,987 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-10-25 22:36:41,987 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-25 22:36:41,987 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:36:41,988 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:41,988 INFO L270 CegarLoopResult]: At program point L46(lines 20 47) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-25 22:36:41,988 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,988 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,988 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,988 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,989 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,989 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-10-25 22:36:41,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-25 22:36:42,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:36:42 BoogieIcfgContainer [2020-10-25 22:36:42,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:36:42,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:36:42,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:36:42,016 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:36:42,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:35:09" (3/4) ... [2020-10-25 22:36:42,020 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:36:42,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-25 22:36:42,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:36:42,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:36:42,039 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:36:42,094 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:36:42,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:36:42,096 INFO L168 Benchmark]: Toolchain (without parser) took 93368.36 ms. Allocated memory was 41.9 MB in the beginning and 73.4 MB in the end (delta: 31.5 MB). Free memory was 19.8 MB in the beginning and 36.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,097 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:36:42,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.41 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 21.0 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.82 ms. Allocated memory is still 41.9 MB. Free memory was 20.9 MB in the beginning and 19.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,099 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 18.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:36:42,100 INFO L168 Benchmark]: RCFGBuilder took 352.52 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 34.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,101 INFO L168 Benchmark]: TraceAbstraction took 92509.37 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 34.3 MB in the beginning and 39.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,102 INFO L168 Benchmark]: Witness Printer took 79.22 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 36.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:36:42,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.41 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 21.0 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.82 ms. Allocated memory is still 41.9 MB. Free memory was 20.9 MB in the beginning and 19.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.11 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 18.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 352.52 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 34.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92509.37 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 34.3 MB in the beginning and 39.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. * Witness Printer took 79.22 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 36.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((s == 1 && a == 0) && t == 1) || ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t)) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1) && 1 == cond) && a * 2 + 1 == t - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.4s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 53.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 218 SDslu, 382 SDs, 0 SdLazy, 578 SolverSat, 115 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 35 NumberOfFragments, 305 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2381 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 53.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 169 ConstructedInterpolants, 1 QuantifiedInterpolants, 18639 SizeOfPredicates, 54 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 78/117 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...