./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:03:11,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:03:11,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:03:11,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:03:11,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:03:11,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:03:11,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:03:11,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:03:11,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:03:11,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:03:11,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:03:11,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:03:11,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:03:11,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:03:11,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:03:11,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:03:11,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:03:11,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:03:11,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:03:11,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:03:11,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:03:11,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:03:11,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:03:11,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:03:11,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:03:11,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:03:11,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:03:11,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:03:11,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:03:11,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:03:11,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:03:11,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:03:11,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:03:11,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:03:11,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:03:11,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:03:11,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:03:11,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:03:11,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:03:11,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:03:11,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:03:11,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 22:03:11,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:03:11,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:03:11,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:03:11,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:03:11,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:03:11,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:03:11,663 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:03:11,663 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:03:11,663 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:03:11,663 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:03:11,664 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:03:11,664 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:03:11,664 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:03:11,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:03:11,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:03:11,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:03:11,666 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:03:11,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:03:11,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:03:11,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:03:11,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:03:11,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:03:11,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:03:11,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:03:11,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:03:11,668 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c [2021-12-21 22:03:11,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:03:11,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:03:11,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:03:11,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:03:11,928 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:03:11,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2021-12-21 22:03:11,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6aeda09/6d09970690214866ba8613c0537b65fa/FLAG4d0feac09 [2021-12-21 22:03:12,334 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:03:12,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2021-12-21 22:03:12,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6aeda09/6d09970690214866ba8613c0537b65fa/FLAG4d0feac09 [2021-12-21 22:03:12,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6aeda09/6d09970690214866ba8613c0537b65fa [2021-12-21 22:03:12,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:03:12,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:03:12,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:03:12,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:03:12,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:03:12,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70560a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12, skipping insertion in model container [2021-12-21 22:03:12,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:03:12,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:03:12,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:03:12,591 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:03:12,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:03:12,662 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:03:12,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12 WrapperNode [2021-12-21 22:03:12,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:03:12,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:03:12,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:03:12,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:03:12,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,708 INFO L137 Inliner]: procedures = 109, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2021-12-21 22:03:12,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:03:12,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:03:12,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:03:12,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:03:12,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:03:12,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:03:12,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:03:12,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:03:12,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (1/1) ... [2021-12-21 22:03:12,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:03:12,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:03:12,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:03:12,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 22:03:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 22:03:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 22:03:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 22:03:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 22:03:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:03:12,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:03:12,878 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:03:12,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:03:13,012 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:03:13,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:03:13,030 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 22:03:13,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:03:13 BoogieIcfgContainer [2021-12-21 22:03:13,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:03:13,032 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:03:13,032 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:03:13,034 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:03:13,034 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:13,034 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:03:12" (1/3) ... [2021-12-21 22:03:13,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@201786b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:03:13, skipping insertion in model container [2021-12-21 22:03:13,035 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:13,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:12" (2/3) ... [2021-12-21 22:03:13,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@201786b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:03:13, skipping insertion in model container [2021-12-21 22:03:13,035 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:13,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:03:13" (3/3) ... [2021-12-21 22:03:13,036 INFO L388 chiAutomizerObserver]: Analyzing ICFG fermat-alloca.i [2021-12-21 22:03:13,092 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:03:13,099 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:03:13,099 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:03:13,099 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:03:13,100 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:03:13,100 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:03:13,100 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:03:13,100 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:03:13,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-12-21 22:03:13,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:03:13,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:13,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:13,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:03:13,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:03:13,148 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:03:13,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-12-21 22:03:13,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:03:13,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:13,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:13,150 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:03:13,150 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:03:13,154 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 9#L556-2true [2021-12-21 22:03:13,155 INFO L793 eck$LassoCheckResult]: Loop: 9#L556-2true assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 14#L557true assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 7#L561true assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 10#L561-2true call main_#t~mem21#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 5#L565true assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 12#L565-2true call main_#t~mem25#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 4#L569true assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 9#L556-2true [2021-12-21 22:03:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 22:03:13,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:13,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519008295] [2021-12-21 22:03:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:13,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:13,340 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:13,400 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash -903226603, now seen corresponding path program 1 times [2021-12-21 22:03:13,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201635127] [2021-12-21 22:03:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:13,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:13,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:03:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869216539] [2021-12-21 22:03:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:13,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:03:13,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:03:13,456 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) [2021-12-21 22:03:13,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 22:03:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:13,551 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:13,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 643070227, now seen corresponding path program 1 times [2021-12-21 22:03:13,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220892638] [2021-12-21 22:03:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:13,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:13,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:03:13,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654860638] [2021-12-21 22:03:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:13,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:03:13,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:03:13,724 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) [2021-12-21 22:03:13,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 22:03:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:03:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-21 22:03:13,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:03:14,074 INFO L353 Elim1Store]: treesize reduction 34, result has 50.7 percent of original size [2021-12-21 22:03:14,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 4758 treesize of output 3617 [2021-12-21 22:03:14,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:14,618 INFO L353 Elim1Store]: treesize reduction 596, result has 32.3 percent of original size [2021-12-21 22:03:14,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 35 case distinctions, treesize of input 3601 treesize of output 2023 [2021-12-21 22:03:14,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-21 22:03:14,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-21 22:03:14,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-21 22:03:14,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 42 [2021-12-21 22:03:14,886 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:14,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 865 treesize of output 853 [2021-12-21 22:03:15,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:15,174 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:15,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2021-12-21 22:03:15,577 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:03:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:15,673 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:15,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-12-21 22:03:15,761 WARN L220 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:03:15,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-12-21 22:03:16,010 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:03:16,226 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:16,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2021-12-21 22:03:16,980 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:03:17,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:22,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 186 [2021-12-21 22:03:24,361 INFO L353 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-12-21 22:03:24,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 329 treesize of output 347 [2021-12-21 22:03:28,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:28,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 501 treesize of output 486 [2021-12-21 22:03:29,020 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:29,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:29,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:29,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:29,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:30,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:30,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:30,999 INFO L353 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-12-21 22:03:30,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 143 treesize of output 159 [2021-12-21 22:03:31,628 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-21 22:03:31,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 78 [2021-12-21 22:03:31,872 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:31,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 140 [2021-12-21 22:03:32,736 INFO L353 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-12-21 22:03:32,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 474 treesize of output 486 [2021-12-21 22:03:32,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 449 treesize of output 437 [2021-12-21 22:03:33,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:33,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:33,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:33,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:33,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:34,390 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 22:03:34,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 149 [2021-12-21 22:03:34,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:03:34,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:34,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 144 [2021-12-21 22:03:34,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:34,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:34,704 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-21 22:03:34,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 174 treesize of output 170 [2021-12-21 22:03:34,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:34,948 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:34,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 260 treesize of output 242 [2021-12-21 22:03:35,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:37,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-21 22:03:37,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-21 22:03:37,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:37,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 96 [2021-12-21 22:03:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:37,385 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 22:03:37,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26 [2021-12-21 22:03:37,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-21 22:03:37,438 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-21 22:03:37,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 46 [2021-12-21 22:03:37,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:37,744 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-21 22:03:37,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 34 [2021-12-21 22:03:37,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:37,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:37,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-12-21 22:03:37,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 22:03:37,862 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:37,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 79 [2021-12-21 22:03:38,193 INFO L353 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-12-21 22:03:38,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 42 [2021-12-21 22:03:38,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:38,255 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:38,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 54 [2021-12-21 22:03:38,362 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:03:38,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2021-12-21 22:03:38,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:03:38,665 INFO L353 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-21 22:03:38,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 54 [2021-12-21 22:03:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:03:38,821 INFO L353 Elim1Store]: treesize reduction 47, result has 14.5 percent of original size [2021-12-21 22:03:38,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 58 [2021-12-21 22:03:38,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2021-12-21 22:03:38,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-12-21 22:03:38,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 22:03:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:03:38,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 22:03:38,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:03:38,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220892638] [2021-12-21 22:03:38,882 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 22:03:38,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654860638] [2021-12-21 22:03:38,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654860638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:03:38,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:03:38,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 22:03:38,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860159966] [2021-12-21 22:03:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:03:51,538 WARN L227 SmtUtils]: Spent 12.65s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-21 22:04:03,759 WARN L227 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-21 22:04:16,409 WARN L227 SmtUtils]: Spent 12.46s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 269] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-12-21 22:04:16,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 22:04:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 22:04:16,430 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-12-21 22:04:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:16,505 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-12-21 22:04:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 22:04:16,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2021-12-21 22:04:16,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2021-12-21 22:04:16,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 19 states and 23 transitions. [2021-12-21 22:04:16,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-21 22:04:16,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-21 22:04:16,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2021-12-21 22:04:16,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:04:16,517 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-21 22:04:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2021-12-21 22:04:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 22:04:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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) [2021-12-21 22:04:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-21 22:04:16,534 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-21 22:04:16,535 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-21 22:04:16,535 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:04:16,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2021-12-21 22:04:16,537 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2021-12-21 22:04:16,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:16,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:16,538 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 22:04:16,538 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:16,538 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 90#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 91#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 92#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 93#L561 assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 88#L561-2 [2021-12-21 22:04:16,538 INFO L793 eck$LassoCheckResult]: Loop: 88#L561-2 call main_#t~mem21#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 85#L565 assume !(main_#t~mem21#1 > main_#t~mem22#1);havoc main_#t~mem21#1;havoc main_#t~mem22#1; 86#L565-2 call main_#t~mem25#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 83#L569 assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 84#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 99#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 87#L561 assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 88#L561-2 [2021-12-21 22:04:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2021-12-21 22:04:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:16,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615742422] [2021-12-21 22:04:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:16,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:16,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:04:16,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810190013] [2021-12-21 22:04:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:16,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:16,582 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) [2021-12-21 22:04:16,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 22:04:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:16,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-21 22:04:16,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:16,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,761 INFO L353 Elim1Store]: treesize reduction 21, result has 46.2 percent of original size [2021-12-21 22:04:16,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 150 [2021-12-21 22:04:16,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 126 [2021-12-21 22:04:16,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,854 INFO L353 Elim1Store]: treesize reduction 106, result has 46.7 percent of original size [2021-12-21 22:04:16,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 138 treesize of output 206 [2021-12-21 22:04:16,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:16,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 141 [2021-12-21 22:04:16,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-21 22:04:16,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:16,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-21 22:04:16,979 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:16,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-21 22:04:17,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:17,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:17,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:17,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2021-12-21 22:04:17,131 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 22:04:17,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2021-12-21 22:04:17,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-12-21 22:04:17,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-21 22:04:17,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 136 [2021-12-21 22:04:17,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 131 [2021-12-21 22:04:17,907 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-21 22:04:17,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 87 [2021-12-21 22:04:17,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-12-21 22:04:17,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-12-21 22:04:18,126 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 22:04:18,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 73 [2021-12-21 22:04:18,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-12-21 22:04:18,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-21 22:04:18,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-21 22:04:18,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 154 [2021-12-21 22:04:20,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 124 [2021-12-21 22:04:20,606 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-21 22:04:20,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 81 [2021-12-21 22:04:20,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-12-21 22:04:20,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:04:20,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-21 22:04:20,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 22:04:21,401 INFO L353 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-12-21 22:04:21,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 65 [2021-12-21 22:04:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:04:21,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 22:04:21,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:04:21,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615742422] [2021-12-21 22:04:21,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 22:04:21,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810190013] [2021-12-21 22:04:21,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810190013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:04:21,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:04:21,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:04:21,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998340881] [2021-12-21 22:04:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:04:21,479 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:04:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1510934147, now seen corresponding path program 1 times [2021-12-21 22:04:21,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86602717] [2021-12-21 22:04:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:21,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:21,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:04:21,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953868280] [2021-12-21 22:04:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:21,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:21,516 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) [2021-12-21 22:04:21,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 22:04:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:21,590 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:21,608 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:23,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:04:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 22:04:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 22:04:23,083 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. cyclomatic complexity: 6 Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-12-21 22:04:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:04:23,090 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-12-21 22:04:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 22:04:23,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-12-21 22:04:23,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:04:23,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2021-12-21 22:04:23,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-21 22:04:23,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-12-21 22:04:23,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2021-12-21 22:04:23,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:04:23,092 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-21 22:04:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2021-12-21 22:04:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 22:04:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 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) [2021-12-21 22:04:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-12-21 22:04:23,093 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-21 22:04:23,093 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-21 22:04:23,093 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:04:23,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-12-21 22:04:23,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:04:23,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:04:23,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:04:23,094 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 22:04:23,094 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:04:23,094 INFO L791 eck$LassoCheckResult]: Stem: 139#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 140#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 141#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 142#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 137#L561 assume !(main_#t~mem17#1 > main_#t~mem18#1);havoc main_#t~mem17#1;havoc main_#t~mem18#1; 138#L561-2 [2021-12-21 22:04:23,094 INFO L793 eck$LassoCheckResult]: Loop: 138#L561-2 call main_#t~mem21#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 135#L565 assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 136#L565-2 call main_#t~mem25#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 133#L569 assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 134#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 144#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 143#L561 assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 138#L561-2 [2021-12-21 22:04:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 28699821, now seen corresponding path program 1 times [2021-12-21 22:04:23,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:23,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255952224] [2021-12-21 22:04:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:23,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:23,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:04:23,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979601430] [2021-12-21 22:04:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:23,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:23,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:23,112 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) [2021-12-21 22:04:23,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 22:04:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:23,226 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:23,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1453675845, now seen corresponding path program 2 times [2021-12-21 22:04:23,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:23,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699797479] [2021-12-21 22:04:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:23,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:23,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:04:23,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348377631] [2021-12-21 22:04:23,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 22:04:23,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:23,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:23,258 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) [2021-12-21 22:04:23,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 22:04:23,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 22:04:23,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-21 22:04:23,321 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:04:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:04:23,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:04:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:04:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1341656857, now seen corresponding path program 1 times [2021-12-21 22:04:23,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:04:23,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693721503] [2021-12-21 22:04:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:23,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:04:23,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 22:04:23,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936962751] [2021-12-21 22:04:23,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:04:23,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:04:23,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:04:23,378 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) [2021-12-21 22:04:23,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 22:04:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:04:23,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-21 22:04:23,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:04:23,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:23,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:24,452 INFO L353 Elim1Store]: treesize reduction 1395, result has 28.2 percent of original size [2021-12-21 22:04:24,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 18 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 21 new quantified variables, introduced 56 case distinctions, treesize of input 4598 treesize of output 2490 [2021-12-21 22:04:24,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-12-21 22:04:24,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-12-21 22:04:24,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 47 [2021-12-21 22:04:24,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-12-21 22:04:24,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 114 [2021-12-21 22:04:24,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 94 [2021-12-21 22:04:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 22:04:25,015 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 22:04:25,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 54