./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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 0b8bf2ea6b03a85ab0986e14b8a2b627c39af27a 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 07:51:37,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 07:51:37,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 07:51:37,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 07:51:37,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 07:51:37,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 07:51:37,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 07:51:37,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 07:51:37,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 07:51:37,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 07:51:37,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 07:51:37,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 07:51:37,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 07:51:37,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 07:51:37,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 07:51:37,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 07:51:37,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 07:51:37,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 07:51:37,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 07:51:37,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 07:51:37,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 07:51:37,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 07:51:37,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 07:51:37,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 07:51:37,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 07:51:37,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 07:51:37,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 07:51:37,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 07:51:37,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 07:51:37,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 07:51:37,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 07:51:37,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 07:51:37,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 07:51:37,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 07:51:37,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 07:51:37,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 07:51:37,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 07:51:37,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 07:51:37,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 07:51:37,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 07:51:37,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 07:51:37,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 07:51:37,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 07:51:37,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 07:51:37,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 07:51:37,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 07:51:37,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 07:51:37,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 07:51:37,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 07:51:37,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 07:51:37,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 07:51:37,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 07:51:37,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 07:51:37,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 07:51:37,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 07:51:37,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 07:51:37,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b8bf2ea6b03a85ab0986e14b8a2b627c39af27a [2021-08-26 07:51:38,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 07:51:38,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 07:51:38,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 07:51:38,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 07:51:38,160 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 07:51:38,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2021-08-26 07:51:38,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8393e4f/f345fce358474624b7aef3e1f81aa433/FLAG85c3c3db4 [2021-08-26 07:51:38,574 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 07:51:38,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2021-08-26 07:51:38,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8393e4f/f345fce358474624b7aef3e1f81aa433/FLAG85c3c3db4 [2021-08-26 07:51:38,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8393e4f/f345fce358474624b7aef3e1f81aa433 [2021-08-26 07:51:38,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 07:51:38,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 07:51:38,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 07:51:38,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 07:51:38,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 07:51:38,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c75677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38, skipping insertion in model container [2021-08-26 07:51:38,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 07:51:38,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 07:51:38,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2021-08-26 07:51:38,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 07:51:38,756 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 07:51:38,766 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2021-08-26 07:51:38,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 07:51:38,791 INFO L208 MainTranslator]: Completed translation [2021-08-26 07:51:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38 WrapperNode [2021-08-26 07:51:38,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 07:51:38,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 07:51:38,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 07:51:38,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 07:51:38,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 07:51:38,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 07:51:38,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 07:51:38,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 07:51:38,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 07:51:38,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 07:51:38,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 07:51:38,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 07:51:38,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (1/1) ... [2021-08-26 07:51:38,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 07:51:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:38,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 07:51:38,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 07:51:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 07:51:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 07:51:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 07:51:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 07:51:39,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 07:51:39,201 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-08-26 07:51:39,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:51:39 BoogieIcfgContainer [2021-08-26 07:51:39,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 07:51:39,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 07:51:39,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 07:51:39,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 07:51:39,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:51:38" (1/3) ... [2021-08-26 07:51:39,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464b28df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:51:39, skipping insertion in model container [2021-08-26 07:51:39,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:51:38" (2/3) ... [2021-08-26 07:51:39,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464b28df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:51:39, skipping insertion in model container [2021-08-26 07:51:39,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:51:39" (3/3) ... [2021-08-26 07:51:39,207 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2021-08-26 07:51:39,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 07:51:39,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 07:51:39,267 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 07:51:39,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 07:51:39,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 07:51:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 07:51:39,297 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:39,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:39,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-08-26 07:51:39,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:39,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563244898] [2021-08-26 07:51:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:39,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:51:39,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:39,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563244898] [2021-08-26 07:51:39,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563244898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 07:51:39,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:51:39,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 07:51:39,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684575609] [2021-08-26 07:51:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 07:51:39,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 07:51:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 07:51:39,447 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:39,457 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-08-26 07:51:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 07:51:39,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 07:51:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:39,463 INFO L225 Difference]: With dead ends: 43 [2021-08-26 07:51:39,463 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 07:51:39,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 07:51:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 07:51:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-26 07:51:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-08-26 07:51:39,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-08-26 07:51:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:39,484 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-08-26 07:51:39,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-08-26 07:51:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 07:51:39,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:39,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:39,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 07:51:39,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:39,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-08-26 07:51:39,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:39,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707270288] [2021-08-26 07:51:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:39,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:39,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:39,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562667415] [2021-08-26 07:51:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:39,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:39,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:39,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 07:51:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:39,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 07:51:39,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:51:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:51:39,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:39,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707270288] [2021-08-26 07:51:39,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:51:39,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562667415] [2021-08-26 07:51:39,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562667415] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 07:51:39,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:51:39,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 07:51:39,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204226661] [2021-08-26 07:51:39,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 07:51:39,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 07:51:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 07:51:39,648 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:39,688 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-08-26 07:51:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 07:51:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 07:51:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:39,690 INFO L225 Difference]: With dead ends: 32 [2021-08-26 07:51:39,690 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 07:51:39,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 07:51:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 07:51:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-08-26 07:51:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-26 07:51:39,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2021-08-26 07:51:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:39,694 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-26 07:51:39,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-26 07:51:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 07:51:39,694 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:39,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:39,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 07:51:39,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:39,911 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:39,912 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2021-08-26 07:51:39,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:39,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724585473] [2021-08-26 07:51:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:39,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:39,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:39,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260942017] [2021-08-26 07:51:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:39,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:39,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:39,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:39,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 07:51:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 07:51:39,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:51:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:51:40,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:40,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724585473] [2021-08-26 07:51:40,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:51:40,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260942017] [2021-08-26 07:51:40,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260942017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 07:51:40,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:51:40,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 07:51:40,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333773783] [2021-08-26 07:51:40,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 07:51:40,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 07:51:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 07:51:40,062 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:40,108 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-08-26 07:51:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 07:51:40,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 07:51:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:40,109 INFO L225 Difference]: With dead ends: 28 [2021-08-26 07:51:40,109 INFO L226 Difference]: Without dead ends: 24 [2021-08-26 07:51:40,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 07:51:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-26 07:51:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-08-26 07:51:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-26 07:51:40,112 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-08-26 07:51:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:40,112 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-26 07:51:40,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-26 07:51:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 07:51:40,113 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:40,113 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:40,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 07:51:40,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 07:51:40,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2021-08-26 07:51:40,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:40,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318872261] [2021-08-26 07:51:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:40,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:40,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:40,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63286030] [2021-08-26 07:51:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:40,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:40,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:40,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 07:51:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:40,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 07:51:40,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:51:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:51:40,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:40,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318872261] [2021-08-26 07:51:40,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:51:40,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63286030] [2021-08-26 07:51:40,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63286030] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:51:40,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:51:40,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 07:51:40,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949847787] [2021-08-26 07:51:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 07:51:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 07:51:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 07:51:40,812 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:42,890 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-08-26 07:51:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 07:51:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 07:51:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:42,891 INFO L225 Difference]: With dead ends: 34 [2021-08-26 07:51:42,891 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 07:51:42,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 07:51:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 07:51:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-08-26 07:51:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-08-26 07:51:42,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2021-08-26 07:51:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:42,894 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-08-26 07:51:42,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:42,895 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-08-26 07:51:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 07:51:42,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:42,895 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:42,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 07:51:43,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:43,105 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2021-08-26 07:51:43,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:43,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018863972] [2021-08-26 07:51:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:43,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:43,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:43,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315320013] [2021-08-26 07:51:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:43,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:43,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:43,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 07:51:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:43,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 07:51:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:51:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:51:43,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:43,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018863972] [2021-08-26 07:51:43,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:51:43,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315320013] [2021-08-26 07:51:43,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315320013] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:51:43,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:51:43,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 07:51:43,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791708739] [2021-08-26 07:51:43,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 07:51:43,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 07:51:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-26 07:51:43,913 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:44,112 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-08-26 07:51:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 07:51:44,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 07:51:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:44,113 INFO L225 Difference]: With dead ends: 40 [2021-08-26 07:51:44,113 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 07:51:44,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-08-26 07:51:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 07:51:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-08-26 07:51:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-08-26 07:51:44,116 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2021-08-26 07:51:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:44,116 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-08-26 07:51:44,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-08-26 07:51:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 07:51:44,117 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:44,117 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:44,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 07:51:44,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:44,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2021-08-26 07:51:44,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:44,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409748263] [2021-08-26 07:51:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:44,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:44,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:44,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127531371] [2021-08-26 07:51:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:44,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:44,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:44,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:44,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 07:51:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:51:44,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 07:51:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:51:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 07:51:44,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:51:44,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409748263] [2021-08-26 07:51:44,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:51:44,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127531371] [2021-08-26 07:51:44,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127531371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 07:51:44,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:51:44,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 07:51:44,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839463099] [2021-08-26 07:51:44,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 07:51:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:51:44,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 07:51:44,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 07:51:44,591 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:51:50,689 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-08-26 07:51:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 07:51:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-26 07:51:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:51:50,690 INFO L225 Difference]: With dead ends: 31 [2021-08-26 07:51:50,690 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 07:51:50,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 07:51:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 07:51:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-08-26 07:51:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-26 07:51:50,693 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-08-26 07:51:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:51:50,693 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-26 07:51:50,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:51:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-26 07:51:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 07:51:50,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:51:50,693 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:51:50,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 07:51:50,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:50,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:51:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:51:50,901 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2021-08-26 07:51:50,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:51:50,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286094749] [2021-08-26 07:51:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:51:50,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:51:50,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:51:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022234205] [2021-08-26 07:51:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 07:51:50,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:51:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:51:50,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:51:50,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 07:51:51,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 07:51:51,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:51:51,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 07:51:51,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:52:07,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:07,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286094749] [2021-08-26 07:52:07,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:07,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022234205] [2021-08-26 07:52:07,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022234205] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:07,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:07,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 07:52:07,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184136096] [2021-08-26 07:52:07,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 07:52:07,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 07:52:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=103, Unknown=2, NotChecked=0, Total=132 [2021-08-26 07:52:07,369 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:15,032 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-08-26 07:52:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 07:52:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 07:52:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:15,033 INFO L225 Difference]: With dead ends: 38 [2021-08-26 07:52:15,033 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 07:52:15,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 7836.5ms TimeCoverageRelationStatistics Valid=62, Invalid=278, Unknown=2, NotChecked=0, Total=342 [2021-08-26 07:52:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 07:52:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-08-26 07:52:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-08-26 07:52:15,036 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-08-26 07:52:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:15,037 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-08-26 07:52:15,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-08-26 07:52:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 07:52:15,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:15,037 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:15,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-08-26 07:52:15,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:15,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash -183023109, now seen corresponding path program 1 times [2021-08-26 07:52:15,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:15,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458849069] [2021-08-26 07:52:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:15,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:15,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:15,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309343159] [2021-08-26 07:52:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:15,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:15,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:15,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:15,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 07:52:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:52:15,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 07:52:15,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:52:17,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:17,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458849069] [2021-08-26 07:52:17,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:17,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309343159] [2021-08-26 07:52:17,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309343159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:17,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:17,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 07:52:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437864517] [2021-08-26 07:52:17,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 07:52:17,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 07:52:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-26 07:52:17,974 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:24,278 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-08-26 07:52:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 07:52:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 07:52:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:24,279 INFO L225 Difference]: With dead ends: 39 [2021-08-26 07:52:24,279 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 07:52:24,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1273.3ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-08-26 07:52:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 07:52:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-08-26 07:52:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-08-26 07:52:24,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-08-26 07:52:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:24,283 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-08-26 07:52:24,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-08-26 07:52:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 07:52:24,284 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:24,284 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:24,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 07:52:24,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:24,484 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:24,485 INFO L82 PathProgramCache]: Analyzing trace with hash -577897161, now seen corresponding path program 2 times [2021-08-26 07:52:24,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:24,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539137613] [2021-08-26 07:52:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:24,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:24,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:24,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98004968] [2021-08-26 07:52:24,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 07:52:24,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:24,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:24,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 07:52:24,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 07:52:24,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:52:24,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 07:52:24,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:52:31,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:31,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539137613] [2021-08-26 07:52:31,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:31,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98004968] [2021-08-26 07:52:31,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98004968] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:31,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:31,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 07:52:31,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424628822] [2021-08-26 07:52:31,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 07:52:31,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 07:52:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-26 07:52:31,245 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:31,783 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-08-26 07:52:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 07:52:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 07:52:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:31,784 INFO L225 Difference]: With dead ends: 43 [2021-08-26 07:52:31,784 INFO L226 Difference]: Without dead ends: 41 [2021-08-26 07:52:31,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 275.1ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-08-26 07:52:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-26 07:52:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2021-08-26 07:52:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-08-26 07:52:31,788 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2021-08-26 07:52:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:31,789 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-08-26 07:52:31,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-08-26 07:52:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 07:52:31,789 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:31,789 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:31,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 07:52:31,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 07:52:31,990 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:31,990 INFO L82 PathProgramCache]: Analyzing trace with hash -576050119, now seen corresponding path program 2 times [2021-08-26 07:52:31,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:31,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558935160] [2021-08-26 07:52:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:31,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:32,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:32,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087564341] [2021-08-26 07:52:32,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 07:52:32,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:32,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:32,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 07:52:32,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 07:52:32,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:52:32,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 07:52:32,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:52:38,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:38,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558935160] [2021-08-26 07:52:38,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:38,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087564341] [2021-08-26 07:52:38,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087564341] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:38,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:38,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 07:52:38,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562296395] [2021-08-26 07:52:38,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 07:52:38,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 07:52:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 07:52:38,362 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:38,697 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-08-26 07:52:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 07:52:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-26 07:52:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:38,700 INFO L225 Difference]: With dead ends: 44 [2021-08-26 07:52:38,700 INFO L226 Difference]: Without dead ends: 42 [2021-08-26 07:52:38,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 263.5ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-08-26 07:52:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-26 07:52:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2021-08-26 07:52:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-08-26 07:52:38,717 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-08-26 07:52:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:38,717 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-08-26 07:52:38,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-08-26 07:52:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 07:52:38,720 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:38,720 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:38,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 07:52:38,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 07:52:38,933 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 322246368, now seen corresponding path program 3 times [2021-08-26 07:52:38,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:38,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210720721] [2021-08-26 07:52:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:38,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:38,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:38,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346307807] [2021-08-26 07:52:38,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 07:52:38,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:38,977 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:38,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 07:52:39,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 07:52:39,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:52:39,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 07:52:39,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 07:52:40,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:40,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210720721] [2021-08-26 07:52:40,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:40,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346307807] [2021-08-26 07:52:40,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346307807] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:40,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:40,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 07:52:40,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468660304] [2021-08-26 07:52:40,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 07:52:40,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 07:52:40,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 07:52:40,453 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:55,364 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-08-26 07:52:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 07:52:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-26 07:52:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:55,365 INFO L225 Difference]: With dead ends: 61 [2021-08-26 07:52:55,365 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 07:52:55,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 11067.8ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-08-26 07:52:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 07:52:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-08-26 07:52:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-26 07:52:55,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2021-08-26 07:52:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:55,369 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-26 07:52:55,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-26 07:52:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 07:52:55,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:55,369 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:55,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 07:52:55,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 07:52:55,585 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:55,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1350644320, now seen corresponding path program 3 times [2021-08-26 07:52:55,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:55,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172318799] [2021-08-26 07:52:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:55,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:55,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:55,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527799820] [2021-08-26 07:52:55,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 07:52:55,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:55,593 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:55,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 07:52:55,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 07:52:55,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:52:55,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 07:52:55,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:52:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-26 07:52:56,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:52:56,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172318799] [2021-08-26 07:52:56,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:52:56,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527799820] [2021-08-26 07:52:56,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527799820] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:52:56,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:52:56,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 07:52:56,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97945413] [2021-08-26 07:52:56,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 07:52:56,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:52:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 07:52:56,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 07:52:56,756 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:52:59,248 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-08-26 07:52:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 07:52:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-26 07:52:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:52:59,250 INFO L225 Difference]: With dead ends: 32 [2021-08-26 07:52:59,250 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 07:52:59,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1056.7ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-26 07:52:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 07:52:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-26 07:52:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:59,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-08-26 07:52:59,256 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 26 [2021-08-26 07:52:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:52:59,257 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-08-26 07:52:59,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:52:59,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-08-26 07:52:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 07:52:59,258 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:52:59,258 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:52:59,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 07:52:59,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 07:52:59,476 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:52:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:52:59,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1348797278, now seen corresponding path program 3 times [2021-08-26 07:52:59,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:52:59,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523287127] [2021-08-26 07:52:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:52:59,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:52:59,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:52:59,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698616234] [2021-08-26 07:52:59,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 07:52:59,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:52:59,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:52:59,491 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:52:59,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 07:52:59,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 07:52:59,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:52:59,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 07:52:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:53:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:53:03,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:53:03,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523287127] [2021-08-26 07:53:03,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:53:03,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698616234] [2021-08-26 07:53:03,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698616234] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:53:03,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:53:03,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-26 07:53:03,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238077488] [2021-08-26 07:53:03,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 07:53:03,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:53:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 07:53:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2021-08-26 07:53:03,323 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:53:14,137 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-08-26 07:53:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 07:53:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-26 07:53:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:53:14,138 INFO L225 Difference]: With dead ends: 38 [2021-08-26 07:53:14,138 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 07:53:14,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 11474.3ms TimeCoverageRelationStatistics Valid=186, Invalid=462, Unknown=2, NotChecked=0, Total=650 [2021-08-26 07:53:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 07:53:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-08-26 07:53:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-08-26 07:53:14,142 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2021-08-26 07:53:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:53:14,142 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-08-26 07:53:14,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-08-26 07:53:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 07:53:14,142 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:53:14,142 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:53:14,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-08-26 07:53:14,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 07:53:14,363 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:53:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:53:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash 920192473, now seen corresponding path program 4 times [2021-08-26 07:53:14,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:53:14,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018512578] [2021-08-26 07:53:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:53:14,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:53:14,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:53:14,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662473532] [2021-08-26 07:53:14,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 07:53:14,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:53:14,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:53:14,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:53:14,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 07:53:14,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 07:53:14,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:53:14,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-26 07:53:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:53:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:53:22,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:53:22,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018512578] [2021-08-26 07:53:22,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:53:22,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662473532] [2021-08-26 07:53:22,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662473532] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:53:22,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:53:22,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-08-26 07:53:22,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781312565] [2021-08-26 07:53:22,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-26 07:53:22,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:53:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-26 07:53:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-08-26 07:53:22,050 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:53:23,023 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-26 07:53:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 07:53:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-26 07:53:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:53:23,024 INFO L225 Difference]: With dead ends: 43 [2021-08-26 07:53:23,024 INFO L226 Difference]: Without dead ends: 41 [2021-08-26 07:53:23,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 953.7ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-08-26 07:53:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-26 07:53:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-08-26 07:53:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-26 07:53:23,035 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2021-08-26 07:53:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:53:23,035 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-26 07:53:23,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-26 07:53:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-26 07:53:23,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:53:23,037 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:53:23,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 07:53:23,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 07:53:23,250 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:53:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:53:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1070802690, now seen corresponding path program 5 times [2021-08-26 07:53:23,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:53:23,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904369480] [2021-08-26 07:53:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:53:23,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:53:23,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:53:23,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275499516] [2021-08-26 07:53:23,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 07:53:23,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:53:23,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:53:23,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:53:23,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 07:53:23,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-26 07:53:23,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:53:23,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-26 07:53:23,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:53:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:53:46,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:53:46,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904369480] [2021-08-26 07:53:46,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:53:46,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275499516] [2021-08-26 07:53:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275499516] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:53:46,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:53:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-26 07:53:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411064549] [2021-08-26 07:53:46,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 07:53:46,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:53:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 07:53:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-08-26 07:53:46,297 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:53:48,998 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-08-26 07:53:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 07:53:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-26 07:53:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:53:48,999 INFO L225 Difference]: With dead ends: 48 [2021-08-26 07:53:48,999 INFO L226 Difference]: Without dead ends: 46 [2021-08-26 07:53:48,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2294.3ms TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 07:53:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-26 07:53:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-08-26 07:53:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-26 07:53:49,004 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2021-08-26 07:53:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:53:49,005 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-26 07:53:49,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-26 07:53:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 07:53:49,005 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:53:49,005 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:53:49,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 07:53:49,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:53:49,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 07:53:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:53:49,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1492932473, now seen corresponding path program 6 times [2021-08-26 07:53:49,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 07:53:49,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674200808] [2021-08-26 07:53:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:53:49,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 07:53:49,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 07:53:49,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349023850] [2021-08-26 07:53:49,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 07:53:49,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 07:53:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:53:49,245 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 07:53:49,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 07:53:49,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-26 07:53:49,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 07:53:49,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 07:53:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:53:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 79 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:53:50,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 07:53:50,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674200808] [2021-08-26 07:53:50,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 07:53:50,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349023850] [2021-08-26 07:53:50,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349023850] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 07:53:50,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 07:53:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-26 07:53:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602137183] [2021-08-26 07:53:50,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 07:53:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 07:53:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 07:53:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-26 07:53:50,404 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:53:50,939 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-08-26 07:53:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 07:53:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-26 07:53:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:53:50,940 INFO L225 Difference]: With dead ends: 44 [2021-08-26 07:53:50,940 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 07:53:50,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 670.1ms TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2021-08-26 07:53:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 07:53:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 07:53:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 07:53:50,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-08-26 07:53:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:53:50,940 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 07:53:50,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:53:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 07:53:50,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 07:53:50,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:53:50,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:53:50,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 07:53:51,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 07:53:51,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 07:53:51,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:53:51,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:53:51,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:53:51,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:54:10,933 WARN L207 SmtUtils]: Spent 19.65 s on a formula simplification. DAG size of input: 195 DAG size of output: 48 [2021-08-26 07:58:42,738 WARN L207 SmtUtils]: Spent 4.53 m on a formula simplification. DAG size of input: 303 DAG size of output: 192 [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 36 37) the Hoare annotation is: (let ((.cse6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= .cse6 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (or (= .cse6 ULTIMATE.start_main_~z~0) (and (not (= ULTIMATE.start_main_~y~0 0)) (= (mod (+ .cse6 (* ULTIMATE.start_main_~z~0 (- 1))) ULTIMATE.start_main_~y~0) 0)))) (.cse5 (<= ULTIMATE.start_main_~b~0 50))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0) .cse3 .cse4) (and (= ULTIMATE.start_main_~z~0 0) .cse0 .cse1 .cse2 (< (* 2 ULTIMATE.start_main_~y~0) 4) .cse3 (< 0 ULTIMATE.start_main_~y~0) .cse4 .cse5)))) [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L857 garLoopResultBuilder]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2021-08-26 07:58:42,743 INFO L860 garLoopResultBuilder]: At program point L13-5(lines 12 18) the Hoare annotation is: true [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse33 (div ULTIMATE.start_main_~b~0 2))) (let ((.cse39 (div .cse33 2))) (let ((.cse26 (div .cse39 2)) (.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse10 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse5 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0)) (.cse4 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* 2 (* .cse10 ULTIMATE.start_main_~y~0))))) (.cse9 (* ULTIMATE.start_main_~z~0 (- 1))) (.cse17 (* (- 1) ULTIMATE.start_main_~z~0)) (.cse2 (<= 1 ULTIMATE.start_main_~b~0)) (.cse18 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_29_43 Int) (aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 Int)) (let ((.cse42 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse41 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse42)) (.cse40 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_29_43))) (and (<= .cse40 .cse41) (< aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 2) (< .cse41 (+ .cse40 1)) (<= 0 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse42 1)) (<= 0 aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105)))))) (.cse19 (not (= (mod ULTIMATE.start_main_~b~0 2) 1))) (.cse20 (not (= (mod .cse26 2) 1))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse21 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* 2 (* ULTIMATE.start_main_~a~0 .cse33))))) (.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse22 (not (= (mod .cse33 2) 1))) (.cse23 (div .cse26 2)) (.cse24 (not (= (mod .cse39 2) 1))) (.cse25 (< 0 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~b~0 50))) (or (and .cse0 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 (= (mod (div (- ULTIMATE.start_main_~x~0) (- 2)) (- 2)) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse5 .cse2) (and .cse0 .cse6 .cse5 .cse2 (let ((.cse7 (= .cse10 0))) (or (let ((.cse8 (* (- 2) .cse10 ULTIMATE.start_main_~y~0))) (let ((.cse11 (div (+ .cse1 .cse8 .cse17) .cse10))) (and (not .cse7) (= (mod (+ .cse1 .cse8 .cse9) .cse10) 0) (<= 0 .cse11) (< .cse11 2) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_34_43 Int)) (let ((.cse14 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse15 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse16 (div (+ .cse14 (* (- 2) .cse15 ULTIMATE.start_main_~y~0) (* (- 1) ULTIMATE.start_main_~z~0)) .cse15))) (let ((.cse13 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_34_43)) (.cse12 (+ .cse16 (* 2 ULTIMATE.start_main_~y~0)))) (and (< .cse12 (+ .cse13 1)) (= .cse14 (+ (* 2 (* .cse15 ULTIMATE.start_main_~y~0)) .cse15 (* .cse16 .cse15))) (<= .cse13 .cse12))))))))) (and .cse4 .cse7))) .cse18) (and .cse19 .cse20 .cse0 .cse21 .cse6 .cse22 (not (= (mod .cse23 2) 1)) .cse24 (= ULTIMATE.start_main_~y~0 (div .cse23 2)) .cse25 (= (* 32 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0) .cse3) (let ((.cse31 (div ULTIMATE.start_main_~x~0 2))) (let ((.cse30 (* (- 2) ULTIMATE.start_main_~y~0 .cse31))) (let ((.cse32 (div (+ .cse1 .cse30 .cse17) .cse31))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse26) .cse21 .cse6 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_37_37 Int)) (let ((.cse28 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_37_37)) (.cse27 (+ (* 2 ULTIMATE.start_main_~y~0) (let ((.cse29 (div ULTIMATE.start_main_~x~0 2))) (div (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (* (- 2) ULTIMATE.start_main_~y~0 .cse29) (* (- 1) ULTIMATE.start_main_~z~0)) .cse29))))) (and (< .cse27 (+ 2 .cse28)) (<= .cse28 .cse27) (not (= (+ .cse28 1) .cse27))))) (= (mod (+ .cse1 .cse9 .cse30) .cse31) 0) (not (= .cse31 0)) (= (mod ULTIMATE.start_main_~x~0 2) 0) (< .cse32 2) (< (div (* (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) (- 1)) (- 2)) (+ (* 2 ULTIMATE.start_main_~y~0) 1 .cse32)) .cse25 .cse3)))) (and (or (and (= ULTIMATE.start_main_~z~0 0) .cse19 .cse0 (= ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) .cse6 (= ULTIMATE.start_main_~y~0 .cse33) .cse2) (let ((.cse38 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse34 (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse37 (div (+ (div (+ ULTIMATE.start_main_~z~0 .cse38) (- 2)) .cse34) ULTIMATE.start_main_~a~0))) (and .cse0 (= (mod (+ (div (+ (* .cse1 (- 1)) ULTIMATE.start_main_~z~0) (- 2)) .cse34) ULTIMATE.start_main_~a~0) 0) .cse6 (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0)) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_22_37 Int)) (let ((.cse36 (+ (* 2 ULTIMATE.start_main_~y~0) (div (+ (div (+ ULTIMATE.start_main_~z~0 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (- 2)) (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~a~0))) (.cse35 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_22_37))) (and (<= .cse35 .cse36) (not (= .cse36 (+ .cse35 1))) (< .cse36 (+ .cse35 2))))) .cse2 (<= 0 .cse37) (< .cse37 2) (not (= ULTIMATE.start_main_~a~0 0)) (= (mod (+ ULTIMATE.start_main_~z~0 (* 4 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse38) (- 2)) 0))))) .cse18) (and .cse19 .cse20 .cse0 .cse21 .cse6 .cse22 (= ULTIMATE.start_main_~x~0 (* 16 ULTIMATE.start_main_~a~0)) (= .cse23 ULTIMATE.start_main_~y~0) .cse24 .cse25 .cse3)))))) [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L10-4(line 10) no Hoare annotation was computed. [2021-08-26 07:58:42,744 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2021-08-26 07:58:42,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 07:58:42,769 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,770 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,792 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,794 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,794 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,794 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,795 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,795 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,796 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,796 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,796 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,796 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,796 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,801 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,802 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 07:58:42 BoogieIcfgContainer [2021-08-26 07:58:42,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 07:58:42,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 07:58:42,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 07:58:42,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 07:58:42,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:51:39" (3/4) ... [2021-08-26 07:58:42,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 07:58:42,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 07:58:42,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 07:58:42,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 07:58:42,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 07:58:42,850 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && !(b / 2 / 2 / 2 / 2 % 2 == 1)) && !(b / 2 / 2 % 2 == 1)) && y == b / 2 / 2 / 2 / 2 / 2) && 0 < y) && 32 * a == x) && b <= 50)) || (((((((((((cond == 1 && y == b / 2 / 2 / 2) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && x % 2 == 0) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 50)) || ((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && 1 <= cond) && y == b / 2) && 1 <= b) || (((((((((cond == 1 && ((a * b * -1 + z) / -2 + -2 * a * y) % a == 0) && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 1 <= b) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0)) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || ((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && x == 16 * a) && b / 2 / 2 / 2 / 2 == y) && !(b / 2 / 2 % 2 == 1)) && 0 < y) && b <= 50) [2021-08-26 07:58:42,868 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 07:58:42,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 07:58:42,869 INFO L168 Benchmark]: Toolchain (without parser) took 424277.20 ms. Allocated memory was 69.2 MB in the beginning and 186.6 MB in the end (delta: 117.4 MB). Free memory was 50.6 MB in the beginning and 140.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-08-26 07:58:42,869 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:58:42,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.15 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 54.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 07:58:42,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 69.2 MB. Free memory was 54.3 MB in the beginning and 52.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 07:58:42,870 INFO L168 Benchmark]: Boogie Preprocessor took 27.79 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 51.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:58:42,870 INFO L168 Benchmark]: RCFGBuilder took 340.75 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 37.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 07:58:42,870 INFO L168 Benchmark]: TraceAbstraction took 423601.21 ms. Allocated memory was 69.2 MB in the beginning and 186.6 MB in the end (delta: 117.4 MB). Free memory was 37.5 MB in the beginning and 143.0 MB in the end (delta: -105.5 MB). Peak memory consumption was 114.8 MB. Max. memory is 16.1 GB. [2021-08-26 07:58:42,870 INFO L168 Benchmark]: Witness Printer took 56.23 ms. Allocated memory is still 186.6 MB. Free memory was 143.0 MB in the beginning and 140.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:58:42,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 201.15 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 54.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 69.2 MB. Free memory was 54.3 MB in the beginning and 52.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.79 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 51.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 340.75 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 37.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 423601.21 ms. Allocated memory was 69.2 MB in the beginning and 186.6 MB in the end (delta: 117.4 MB). Free memory was 37.5 MB in the beginning and 143.0 MB in the end (delta: -105.5 MB). Peak memory consumption was 114.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.23 ms. Allocated memory is still 186.6 MB. Free memory was 143.0 MB in the beginning and 140.9 MB in the end (delta: 2.1 MB). There was no memory consumed. 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_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 423480.4ms, OverallIterations: 16, TraceHistogramMax: 7, EmptinessCheckTime: 12.2ms, AutomataDifference: 55796.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 291589.4ms, InitialAbstractionConstructionTime: 19.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 185 SDtfs, 555 SDslu, 533 SDs, 0 SdLazy, 1770 SolverSat, 190 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 31278.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 37599.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=15, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 78.2ms AutomataMinimizationTime, 16 MinimizatonAttempts, 83 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 29 NumberOfFragments, 1087 HoareAnnotationTreeSize, 4 FomulaSimplifications, 72330 FormulaSimplificationTreeSizeReduction, 125.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 10058 FormulaSimplificationTreeSizeReductionInter, 291457.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 107.0ms SsaConstructionTime, 346.8ms SatisfiabilityAnalysisTime, 69552.0ms InterpolantComputationTime, 357 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 341 ConstructedInterpolants, 11 QuantifiedInterpolants, 5374 SizeOfPredicates, 126 NumberOfNonLiveVariables, 1382 ConjunctsInSsa, 411 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 114/291 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 == cond) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && a * b == z + x * y) && 1 == cond) && x % -2 == 0) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0)))) || ((((((((z == 0 && cond == 1) && a * b == z + x * y) && 1 == cond) && 2 * y < 4) && 1 <= b) && 0 < y) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) && b <= 50) - InvariantResult [Line: 34]: Loop Invariant [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,878 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-08-26 07:58:42,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] Derived loop invariant: ((((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && !(b / 2 / 2 / 2 / 2 % 2 == 1)) && !(b / 2 / 2 % 2 == 1)) && y == b / 2 / 2 / 2 / 2 / 2) && 0 < y) && 32 * a == x) && b <= 50)) || (((((((((((cond == 1 && y == b / 2 / 2 / 2) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && x % 2 == 0) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 50)) || ((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && 1 <= cond) && y == b / 2) && 1 <= b) || (((((((((cond == 1 && ((a * b * -1 + z) / -2 + -2 * a * y) % a == 0) && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 1 <= b) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0)) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || ((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && x == 16 * a) && b / 2 / 2 / 2 / 2 == y) && !(b / 2 / 2 % 2 == 1)) && 0 < y) && b <= 50) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 07:58:43,098 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-26 07:58:43,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...