./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/gcd_4.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/bitvector/gcd_4.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 9c20edfd7ede05443471560aa2c7be34d4e8c171 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:34:24,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:34:24,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:34:24,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:34:24,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:34:24,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:34:24,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:34:24,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:34:24,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:34:24,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:34:24,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:34:24,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:34:24,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:34:24,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:34:24,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:34:24,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:34:24,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:34:24,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:34:24,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:34:24,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:34:24,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:34:24,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:34:24,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:34:24,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:34:24,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:34:24,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:34:24,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:34:24,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:34:24,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:34:24,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:34:24,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:34:24,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:34:24,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:34:24,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:34:24,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:34:24,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:34:24,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:34:24,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:34:24,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:34:24,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:34:24,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:34:24,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:34:24,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:34:24,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:34:24,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:34:24,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:34:24,989 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:34:24,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:34:24,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:34:24,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:34:24,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:34:24,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:34:24,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:34:24,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:34:24,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:34:24,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:34:24,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:34:24,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:34:24,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:34:24,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:34:24,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:34:24,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:34:24,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:34:24,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:34:24,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:34:24,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:34:24,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:34:24,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:34:24,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:34:24,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:34:24,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:34:24,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2020-10-25 19:34:25,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:34:25,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:34:25,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:34:25,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:34:25,490 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:34:25,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2020-10-25 19:34:25,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a742c79/e1312a2776834891a386b7d9b7ac126d/FLAGbf1175813 [2020-10-25 19:34:26,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:34:26,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2020-10-25 19:34:26,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a742c79/e1312a2776834891a386b7d9b7ac126d/FLAGbf1175813 [2020-10-25 19:34:26,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a742c79/e1312a2776834891a386b7d9b7ac126d [2020-10-25 19:34:26,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:34:26,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:34:26,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:34:26,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:34:26,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:34:26,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c61a380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26, skipping insertion in model container [2020-10-25 19:34:26,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:34:26,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:34:26,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:34:26,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:34:26,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:34:26,797 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:34:26,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26 WrapperNode [2020-10-25 19:34:26,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:34:26,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:34:26,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:34:26,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:34:26,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:34:26,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:34:26,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:34:26,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:34:26,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (1/1) ... [2020-10-25 19:34:26,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:34:26,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:34:26,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:34:26,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:34:26,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (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 19:34:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:34:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:34:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:34:26,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:34:27,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:34:27,345 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-25 19:34:27,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:34:27 BoogieIcfgContainer [2020-10-25 19:34:27,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:34:27,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:34:27,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:34:27,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:34:27,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:34:26" (1/3) ... [2020-10-25 19:34:27,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a712e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:34:27, skipping insertion in model container [2020-10-25 19:34:27,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:34:26" (2/3) ... [2020-10-25 19:34:27,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a712e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:34:27, skipping insertion in model container [2020-10-25 19:34:27,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:34:27" (3/3) ... [2020-10-25 19:34:27,360 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2020-10-25 19:34:27,376 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:34:27,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 19:34:27,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 19:34:27,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:34:27,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:34:27,459 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:34:27,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:34:27,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:34:27,460 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:34:27,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:34:27,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:34:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-25 19:34:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 19:34:27,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:27,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:27,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:27,504 INFO L82 PathProgramCache]: Analyzing trace with hash 121403650, now seen corresponding path program 1 times [2020-10-25 19:34:27,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:27,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733652279] [2020-10-25 19:34:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:27,680 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:27,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223176577] [2020-10-25 19:34:27,682 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 19:34:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:34:27,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:27,896 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 19:34:27,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733652279] [2020-10-25 19:34:27,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:27,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223176577] [2020-10-25 19:34:27,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:34:27,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:34:27,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742169215] [2020-10-25 19:34:27,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:34:27,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:34:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:27,922 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-25 19:34:27,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:27,983 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-25 19:34:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:34:27,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-25 19:34:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:27,996 INFO L225 Difference]: With dead ends: 67 [2020-10-25 19:34:27,996 INFO L226 Difference]: Without dead ends: 35 [2020-10-25 19:34:27,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-25 19:34:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-10-25 19:34:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 19:34:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-25 19:34:28,036 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2020-10-25 19:34:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:28,037 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-25 19:34:28,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:34:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-25 19:34:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 19:34:28,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:28,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:28,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-25 19:34:28,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash -60379342, now seen corresponding path program 1 times [2020-10-25 19:34:28,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:28,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201584173] [2020-10-25 19:34:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:28,337 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 19:34:28,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201584173] [2020-10-25 19:34:28,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:34:28,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:34:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587097130] [2020-10-25 19:34:28,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:34:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:34:28,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:28,342 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2020-10-25 19:34:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:28,372 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-25 19:34:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:34:28,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-25 19:34:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:28,374 INFO L225 Difference]: With dead ends: 38 [2020-10-25 19:34:28,374 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 19:34:28,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 19:34:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-25 19:34:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 19:34:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-25 19:34:28,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-10-25 19:34:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:28,383 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-25 19:34:28,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:34:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-25 19:34:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 19:34:28,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:28,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:28,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:34:28,385 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash 108865487, now seen corresponding path program 1 times [2020-10-25 19:34:28,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:28,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023665850] [2020-10-25 19:34:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:28,402 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:28,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389387083] [2020-10-25 19:34:28,402 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 19:34:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:28,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:34:28,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:28,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023665850] [2020-10-25 19:34:28,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:28,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389387083] [2020-10-25 19:34:28,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:28,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-25 19:34:28,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849140005] [2020-10-25 19:34:28,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:34:28,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:34:28,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:34:28,532 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-10-25 19:34:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:28,591 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-25 19:34:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:34:28,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-25 19:34:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:28,593 INFO L225 Difference]: With dead ends: 39 [2020-10-25 19:34:28,593 INFO L226 Difference]: Without dead ends: 24 [2020-10-25 19:34:28,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:34:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-25 19:34:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-25 19:34:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-25 19:34:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-25 19:34:28,600 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2020-10-25 19:34:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:28,600 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-25 19:34:28,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:34:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-25 19:34:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:34:28,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:28,601 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:28,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:28,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:28,804 INFO L82 PathProgramCache]: Analyzing trace with hash -326322836, now seen corresponding path program 1 times [2020-10-25 19:34:28,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:28,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774842704] [2020-10-25 19:34:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:28,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:28,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527277133] [2020-10-25 19:34:28,830 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 19:34:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:34:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:29,054 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 19:34:29,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774842704] [2020-10-25 19:34:29,055 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:29,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527277133] [2020-10-25 19:34:29,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:29,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-25 19:34:29,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440211075] [2020-10-25 19:34:29,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:34:29,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:34:29,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:34:29,058 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-25 19:34:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:29,147 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-25 19:34:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:34:29,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-25 19:34:29,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:29,149 INFO L225 Difference]: With dead ends: 41 [2020-10-25 19:34:29,149 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 19:34:29,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:34:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 19:34:29,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-25 19:34:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-25 19:34:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-25 19:34:29,156 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2020-10-25 19:34:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:29,157 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-25 19:34:29,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:34:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-25 19:34:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:34:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:29,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:29,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:29,373 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:29,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1930473527, now seen corresponding path program 2 times [2020-10-25 19:34:29,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:29,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394162279] [2020-10-25 19:34:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:29,391 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:29,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189662893] [2020-10-25 19:34:29,392 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 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 19:34:29,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 19:34:29,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:29,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-25 19:34:29,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:29,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394162279] [2020-10-25 19:34:29,586 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:29,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189662893] [2020-10-25 19:34:29,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:29,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-25 19:34:29,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498087069] [2020-10-25 19:34:29,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:34:29,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:29,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:34:29,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:34:29,589 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-25 19:34:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:29,730 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-25 19:34:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:34:29,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-25 19:34:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:29,732 INFO L225 Difference]: With dead ends: 43 [2020-10-25 19:34:29,732 INFO L226 Difference]: Without dead ends: 28 [2020-10-25 19:34:29,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:34:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-25 19:34:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-25 19:34:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-25 19:34:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-25 19:34:29,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 16 [2020-10-25 19:34:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:29,739 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-25 19:34:29,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:34:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-25 19:34:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:34:29,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:29,741 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:29,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:29,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1626028314, now seen corresponding path program 3 times [2020-10-25 19:34:29,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:29,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608398926] [2020-10-25 19:34:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:29,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:29,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577798647] [2020-10-25 19:34:29,974 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 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 19:34:30,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-25 19:34:30,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:30,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 19:34:30,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:30,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608398926] [2020-10-25 19:34:30,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:30,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577798647] [2020-10-25 19:34:30,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:30,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-25 19:34:30,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439891962] [2020-10-25 19:34:30,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:34:30,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:30,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:34:30,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:34:30,220 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2020-10-25 19:34:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:30,315 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-25 19:34:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:34:30,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-25 19:34:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:30,317 INFO L225 Difference]: With dead ends: 47 [2020-10-25 19:34:30,317 INFO L226 Difference]: Without dead ends: 30 [2020-10-25 19:34:30,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:34:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-25 19:34:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-25 19:34:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-25 19:34:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-25 19:34:30,324 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 18 [2020-10-25 19:34:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:30,324 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-25 19:34:30,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:34:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-25 19:34:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:34:30,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:30,326 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:30,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-25 19:34:30,539 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:30,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1921301375, now seen corresponding path program 4 times [2020-10-25 19:34:30,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:30,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686527907] [2020-10-25 19:34:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:30,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:30,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8411321] [2020-10-25 19:34:30,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 19:34:30,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-25 19:34:30,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:30,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-25 19:34:30,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:30,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686527907] [2020-10-25 19:34:30,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:30,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8411321] [2020-10-25 19:34:30,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:30,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-25 19:34:30,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500598799] [2020-10-25 19:34:30,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 19:34:30,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:30,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 19:34:30,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:34:30,856 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2020-10-25 19:34:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:31,264 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-25 19:34:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 19:34:31,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-25 19:34:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:31,268 INFO L225 Difference]: With dead ends: 47 [2020-10-25 19:34:31,268 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 19:34:31,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:34:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 19:34:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-25 19:34:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-25 19:34:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-25 19:34:31,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2020-10-25 19:34:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:31,277 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-25 19:34:31,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 19:34:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-25 19:34:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:34:31,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:31,278 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:31,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:31,494 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:31,494 INFO L82 PathProgramCache]: Analyzing trace with hash 465533924, now seen corresponding path program 1 times [2020-10-25 19:34:31,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:31,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521622106] [2020-10-25 19:34:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:31,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:31,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596945477] [2020-10-25 19:34:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:34:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-25 19:34:31,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 19:34:31,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521622106] [2020-10-25 19:34:31,703 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:31,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596945477] [2020-10-25 19:34:31,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:31,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-25 19:34:31,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856922529] [2020-10-25 19:34:31,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:34:31,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:31,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:34:31,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:34:31,706 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2020-10-25 19:34:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:31,936 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-25 19:34:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:34:31,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-25 19:34:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:31,938 INFO L225 Difference]: With dead ends: 51 [2020-10-25 19:34:31,938 INFO L226 Difference]: Without dead ends: 40 [2020-10-25 19:34:31,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-25 19:34:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-25 19:34:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-25 19:34:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-25 19:34:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-25 19:34:31,945 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 22 [2020-10-25 19:34:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:31,945 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-25 19:34:31,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:34:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-25 19:34:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:34:31,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:31,951 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:32,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:32,165 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2084095836, now seen corresponding path program 5 times [2020-10-25 19:34:32,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:32,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185371668] [2020-10-25 19:34:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:32,182 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:32,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738905536] [2020-10-25 19:34:32,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 19:34:32,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-25 19:34:32,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:32,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-25 19:34:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:32,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185371668] [2020-10-25 19:34:32,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:32,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738905536] [2020-10-25 19:34:32,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:32,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-25 19:34:32,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123758768] [2020-10-25 19:34:32,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:34:32,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:32,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:34:32,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:34:32,449 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-10-25 19:34:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:32,647 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-25 19:34:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:34:32,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-25 19:34:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:32,651 INFO L225 Difference]: With dead ends: 54 [2020-10-25 19:34:32,651 INFO L226 Difference]: Without dead ends: 34 [2020-10-25 19:34:32,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-25 19:34:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-25 19:34:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-25 19:34:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-25 19:34:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-25 19:34:32,658 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 22 [2020-10-25 19:34:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:32,659 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-25 19:34:32,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:34:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-25 19:34:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:34:32,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:32,660 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:32,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-25 19:34:32,871 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:32,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2026837534, now seen corresponding path program 6 times [2020-10-25 19:34:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:32,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064695388] [2020-10-25 19:34:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:32,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:32,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915624944] [2020-10-25 19:34:32,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 19:34:32,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-25 19:34:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:32,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 19:34:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-25 19:34:32,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064695388] [2020-10-25 19:34:32,985 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:32,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915624944] [2020-10-25 19:34:32,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:34:32,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:34:32,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999070186] [2020-10-25 19:34:32,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:34:32,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:32,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:34:32,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:32,995 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 3 states. [2020-10-25 19:34:33,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:33,019 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-10-25 19:34:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:34:33,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:34:33,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:33,022 INFO L225 Difference]: With dead ends: 48 [2020-10-25 19:34:33,022 INFO L226 Difference]: Without dead ends: 35 [2020-10-25 19:34:33,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:34:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-25 19:34:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-25 19:34:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-25 19:34:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-25 19:34:33,031 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-25 19:34:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:33,031 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-25 19:34:33,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:34:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-25 19:34:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:34:33,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:33,033 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:33,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:33,242 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1401524834, now seen corresponding path program 7 times [2020-10-25 19:34:33,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:33,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986807038] [2020-10-25 19:34:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:33,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:33,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192018520] [2020-10-25 19:34:33,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 19:34:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:34:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 19:34:33,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 19:34:33,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986807038] [2020-10-25 19:34:33,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:33,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192018520] [2020-10-25 19:34:33,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:33,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-25 19:34:33,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861673327] [2020-10-25 19:34:33,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:34:33,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:34:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:34:33,419 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 7 states. [2020-10-25 19:34:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:33,502 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-25 19:34:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:34:33,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-25 19:34:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:33,503 INFO L225 Difference]: With dead ends: 49 [2020-10-25 19:34:33,503 INFO L226 Difference]: Without dead ends: 33 [2020-10-25 19:34:33,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:34:33,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-25 19:34:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-25 19:34:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-25 19:34:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-25 19:34:33,523 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2020-10-25 19:34:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:33,524 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-25 19:34:33,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:34:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-25 19:34:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:34:33,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:34:33,530 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:34:33,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:33,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:34:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:34:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash -505502279, now seen corresponding path program 8 times [2020-10-25 19:34:33,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:34:33,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226947314] [2020-10-25 19:34:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:34:33,765 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:34:33,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794533427] [2020-10-25 19:34:33,766 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:34:33,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 19:34:33,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:34:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-25 19:34:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:34:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:34:34,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226947314] [2020-10-25 19:34:34,082 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-25 19:34:34,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794533427] [2020-10-25 19:34:34,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:34:34,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-25 19:34:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763357811] [2020-10-25 19:34:34,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 19:34:34,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:34:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 19:34:34,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:34:34,088 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 10 states. [2020-10-25 19:34:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:34:34,284 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-25 19:34:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:34:34,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-25 19:34:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:34:34,285 INFO L225 Difference]: With dead ends: 33 [2020-10-25 19:34:34,286 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:34:34,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:34:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:34:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:34:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:34:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:34:34,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-25 19:34:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:34:34,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:34:34,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 19:34:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:34:34,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:34:34,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-25 19:34:34,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:34:34,947 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-25 19:34:34,951 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,951 INFO L274 CegarLoopResult]: For program point L15-1(lines 13 29) no Hoare annotation was computed. [2020-10-25 19:34:34,951 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-25 19:34:34,952 INFO L270 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (= ULTIMATE.start_main_~y~0 18) (= (+ ULTIMATE.start_main_~g~0 .cse0) 63) (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63))) [2020-10-25 19:34:34,952 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-10-25 19:34:34,952 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,952 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,952 INFO L270 CegarLoopResult]: At program point L7-5(lines 6 11) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= (+ ULTIMATE.start_main_~g~0 .cse0) 63) (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63))) [2020-10-25 19:34:34,953 INFO L274 CegarLoopResult]: For program point L7-6(lines 7 9) no Hoare annotation was computed. [2020-10-25 19:34:34,953 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,953 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:34:34,953 INFO L277 CegarLoopResult]: At program point L7-8(lines 6 11) the Hoare annotation is: true [2020-10-25 19:34:34,953 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:34:34,953 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:34:34,954 INFO L270 CegarLoopResult]: At program point L28(lines 12 29) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 3))) (and (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_gcd_test_~b 3) (* ULTIMATE.start_gcd_test_~a 7))) (= ULTIMATE.start_main_~y~0 18) (= ULTIMATE.start_main_~x~0 63))) [2020-10-25 19:34:34,954 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,954 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-25 19:34:34,954 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-25 19:34:34,954 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-10-25 19:34:34,955 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:34:34,955 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-10-25 19:34:34,955 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:34:34,955 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-10-25 19:34:34,956 INFO L270 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (let ((.cse7 (<= ULTIMATE.start_gcd_test_~b 18)) (.cse8 (<= 18 ULTIMATE.start_gcd_test_~b)) (.cse0 (= (+ (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_gcd_test_~a) 63)) (.cse5 (* ULTIMATE.start_gcd_test_~b 3)) (.cse4 (= ULTIMATE.start_main_~y~0 18)) (.cse2 (= ULTIMATE.start_main_~x~0 63)) (.cse3 (= ULTIMATE.start_gcd_test_~b 18))) (or (let ((.cse1 (+ (* 3 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse0 (<= .cse1 63) .cse2 (<= 63 .cse1) .cse3)) (and .cse0 .cse4 .cse2 (= ULTIMATE.start_main_~x~0 (+ .cse5 (* ULTIMATE.start_gcd_test_~a 4)))) (let ((.cse6 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a))) (and (= ULTIMATE.start_main_~x~0 .cse6) .cse7 .cse8 .cse4 (= .cse6 63))) (and .cse7 .cse8 .cse4 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0) (= ULTIMATE.start_gcd_test_~a 63)) (and .cse0 (= ULTIMATE.start_main_~x~0 (+ .cse5 (* ULTIMATE.start_gcd_test_~a 7))) (exists ((aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 Int) (aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 Int)) (and (<= 0 aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56) (<= (+ ULTIMATE.start_gcd_test_~b 106) (+ (* 6 aux_div_v_ULTIMATE.start_gcd_test_~a_35_56) (* 2 aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56))) (<= 62 (+ ULTIMATE.start_gcd_test_~b (* 3 aux_div_v_ULTIMATE.start_gcd_test_~a_35_56) ULTIMATE.start_gcd_test_~a aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56)) (<= aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 17) (< aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 3))) .cse2) (let ((.cse9 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse4 (<= 63 .cse9) (<= .cse9 63) .cse2 .cse3)))) [2020-10-25 19:34:34,956 INFO L277 CegarLoopResult]: At program point L47(lines 32 48) the Hoare annotation is: true [2020-10-25 19:34:34,956 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-25 19:34:34,956 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 29) no Hoare annotation was computed. [2020-10-25 19:34:34,975 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,976 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,977 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,977 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,977 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,978 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,978 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,980 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,980 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,980 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,980 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,981 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,981 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,981 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:34,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:34:34 BoogieIcfgContainer [2020-10-25 19:34:34,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:34:34,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:34:34,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:34:34,985 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:34:34,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:34:27" (3/4) ... [2020-10-25 19:34:34,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:34:35,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-25 19:34:35,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-25 19:34:35,016 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:34:35,016 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:34:35,044 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y * 3 + a == 63 && 3 * b + a <= 63) && x == 63) && 63 <= 3 * b + a) && b == 18) || (((y * 3 + a == 63 && y == 18) && x == 63) && x == b * 3 + a * 4)) || ((((x == b + a && b <= 18) && 18 <= b) && y == 18) && b + a == 63)) || ((((b <= 18 && 18 <= b) && y == 18) && a == x) && a == 63)) || (((y * 3 + a == 63 && x == b * 3 + a * 7) && (\exists aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 : int, aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 : int :: (((0 <= aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 && b + 106 <= 6 * aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 + 2 * aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56) && 62 <= b + 3 * aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 + a + aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56) && aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 <= 17) && aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 < 3)) && x == 63)) || ((((y == 18 && 63 <= 2 * b + a) && 2 * b + a <= 63) && x == 63) && b == 18) [2020-10-25 19:34:35,044 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y * 3 + a == 63 && \result + y * 3 == 63) && x == b * 3 + a * 7) && y == 18) && x == 63 [2020-10-25 19:34:35,045 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result + 3 * y == 63 && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 [2020-10-25 19:34:35,045 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result + 3 * y == 63 && 1 <= cond) && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 [2020-10-25 19:34:35,065 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:34:35,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:34:35,069 INFO L168 Benchmark]: Toolchain (without parser) took 8583.59 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 29.6 MB in the beginning and 72.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,070 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:34:35,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 30.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.25 ms. Allocated memory is still 52.4 MB. Free memory was 30.7 MB in the beginning and 29.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,075 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 28.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:34:35,076 INFO L168 Benchmark]: RCFGBuilder took 475.77 ms. Allocated memory is still 52.4 MB. Free memory was 28.1 MB in the beginning and 28.3 MB in the end (delta: -251.5 kB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,077 INFO L168 Benchmark]: TraceAbstraction took 7634.08 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 24.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,079 INFO L168 Benchmark]: Witness Printer took 81.11 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 24.4 MB in the beginning and 72.5 MB in the end (delta: -48.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:34:35,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 30.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.25 ms. Allocated memory is still 52.4 MB. Free memory was 30.7 MB in the beginning and 29.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 28.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 475.77 ms. Allocated memory is still 52.4 MB. Free memory was 28.1 MB in the beginning and 28.3 MB in the end (delta: -251.5 kB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7634.08 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 24.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 81.11 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 24.4 MB in the beginning and 72.5 MB in the end (delta: -48.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((\result + 3 * y == 63 && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((y * 3 + a == 63 && \result + y * 3 == 63) && x == b * 3 + a * 7) && y == 18) && x == 63 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (((\result + 3 * y == 63 && 1 <= cond) && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 - InvariantResult [Line: 21]: Loop Invariant [2020-10-25 19:34:35,097 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,097 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,097 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,097 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,099 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,101 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] [2020-10-25 19:34:35,101 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56,QUANTIFIED] Derived loop invariant: ((((((((y * 3 + a == 63 && 3 * b + a <= 63) && x == 63) && 63 <= 3 * b + a) && b == 18) || (((y * 3 + a == 63 && y == 18) && x == 63) && x == b * 3 + a * 4)) || ((((x == b + a && b <= 18) && 18 <= b) && y == 18) && b + a == 63)) || ((((b <= 18 && 18 <= b) && y == 18) && a == x) && a == 63)) || (((y * 3 + a == 63 && x == b * 3 + a * 7) && (\exists aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 : int, aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 : int :: (((0 <= aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 && b + 106 <= 6 * aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 + 2 * aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56) && 62 <= b + 3 * aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 + a + aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56) && aux_div_v_ULTIMATE.start_gcd_test_~a_35_56 <= 17) && aux_mod_v_ULTIMATE.start_gcd_test_~a_35_56 < 3)) && x == 63)) || ((((y == 18 && 63 <= 2 * b + a) && 2 * b + a <= 63) && x == 63) && b == 18) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 113 SDslu, 469 SDs, 0 SdLazy, 627 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 19 NumberOfFragments, 248 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 198 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 210 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 198 ConstructedInterpolants, 4 QuantifiedInterpolants, 25125 SizeOfPredicates, 61 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 84/237 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...