./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 6c24879c 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-?-6c24879 [2022-07-13 03:20:13,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:20:13,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:20:13,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:20:13,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:20:13,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:20:13,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:20:13,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:20:13,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:20:13,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:20:13,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:20:13,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:20:13,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:20:13,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:20:13,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:20:13,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:20:13,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:20:13,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:20:13,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:20:13,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:20:13,941 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:20:13,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:20:13,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:20:13,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:20:13,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:20:13,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:20:13,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:20:13,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:20:13,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:20:13,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:20:13,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:20:13,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:20:13,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:20:13,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:20:13,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:20:13,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:20:13,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:20:13,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:20:13,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:20:13,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:20:13,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:20:13,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:20:13,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:20:13,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:20:13,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:20:13,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:20:13,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:20:14,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:20:14,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:20:14,001 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:20:14,001 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:20:14,001 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:20:14,002 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:20:14,002 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:20:14,002 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:20:14,002 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:20:14,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:20:14,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:20:14,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:20:14,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:20:14,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:20:14,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:20:14,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:20:14,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:20:14,005 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:20:14,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:20:14,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:20:14,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:20:14,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:20:14,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:20:14,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:20:14,017 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:20:14,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c [2022-07-13 03:20:14,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:20:14,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:20:14,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:20:14,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:20:14,274 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:20:14,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2022-07-13 03:20:14,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58145c06/3e8bc146259b4e919ab3eddaa61cf093/FLAG3b0de8387 [2022-07-13 03:20:14,869 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:20:14,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2022-07-13 03:20:14,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58145c06/3e8bc146259b4e919ab3eddaa61cf093/FLAG3b0de8387 [2022-07-13 03:20:15,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c58145c06/3e8bc146259b4e919ab3eddaa61cf093 [2022-07-13 03:20:15,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:20:15,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:20:15,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:20:15,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:20:15,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:20:15,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576a87fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15, skipping insertion in model container [2022-07-13 03:20:15,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:20:15,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:20:15,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:20:15,644 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:20:15,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:20:15,698 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:20:15,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15 WrapperNode [2022-07-13 03:20:15,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:20:15,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:20:15,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:20:15,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:20:15,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,740 INFO L137 Inliner]: procedures = 109, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2022-07-13 03:20:15,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:20:15,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:20:15,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:20:15,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:20:15,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:20:15,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:20:15,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:20:15,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:20:15,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (1/1) ... [2022-07-13 03:20:15,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:20:15,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:15,808 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) [2022-07-13 03:20:15,811 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 [2022-07-13 03:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 03:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 03:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 03:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 03:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:20:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:20:15,982 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:20:15,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:20:16,184 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:20:16,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:20:16,194 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:20:16,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:20:16 BoogieIcfgContainer [2022-07-13 03:20:16,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:20:16,199 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:20:16,199 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:20:16,202 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:20:16,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:20:16,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:20:15" (1/3) ... [2022-07-13 03:20:16,203 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64e8f34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:20:16, skipping insertion in model container [2022-07-13 03:20:16,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:20:16,204 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:20:15" (2/3) ... [2022-07-13 03:20:16,204 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64e8f34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:20:16, skipping insertion in model container [2022-07-13 03:20:16,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:20:16,204 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:20:16" (3/3) ... [2022-07-13 03:20:16,214 INFO L354 chiAutomizerObserver]: Analyzing ICFG fermat-alloca.i [2022-07-13 03:20:16,283 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:20:16,283 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:20:16,283 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:20:16,283 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:20:16,284 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:20:16,284 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:20:16,284 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:20:16,284 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:20:16,288 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) [2022-07-13 03:20:16,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-13 03:20:16,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:20:16,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:20:16,314 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:20:16,315 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:20:16,315 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:20:16,315 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) [2022-07-13 03:20:16,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-13 03:20:16,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:20:16,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:20:16,319 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:20:16,319 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:20:16,325 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#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); 8#L556-2true [2022-07-13 03:20:16,326 INFO L754 eck$LassoCheckResult]: Loop: 8#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); 13#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); 6#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; 9#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); 4#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; 11#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); 3#L569true assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 8#L556-2true [2022-07-13 03:20:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:20:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:16,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988418276] [2022-07-13 03:20:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:16,565 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:20:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:16,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:20:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -903226603, now seen corresponding path program 1 times [2022-07-13 03:20:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:16,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094585981] [2022-07-13 03:20:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:16,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496533884] [2022-07-13 03:20:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:16,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:16,703 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) [2022-07-13 03:20:16,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 03:20:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:16,821 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:20:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:16,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:20:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash 643070227, now seen corresponding path program 1 times [2022-07-13 03:20:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:16,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970340855] [2022-07-13 03:20:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:16,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:16,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896057211] [2022-07-13 03:20:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:16,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:16,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:16,943 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) [2022-07-13 03:20:16,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 03:20:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:20:17,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-13 03:20:17,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:20:17,442 INFO L356 Elim1Store]: treesize reduction 34, result has 50.7 percent of original size [2022-07-13 03:20:17,443 INFO L390 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 [2022-07-13 03:20:17,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:19,000 INFO L356 Elim1Store]: treesize reduction 680, result has 22.8 percent of original size [2022-07-13 03:20:19,001 INFO L390 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 2863 [2022-07-13 03:20:19,152 INFO L390 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 [2022-07-13 03:20:19,254 INFO L390 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 [2022-07-13 03:20:19,392 INFO L390 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 [2022-07-13 03:20:19,550 INFO L390 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 [2022-07-13 03:20:19,735 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 03:20:19,735 INFO L390 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 [2022-07-13 03:20:21,229 INFO L390 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 [2022-07-13 03:20:21,353 INFO L390 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 [2022-07-13 03:20:21,424 INFO L390 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 [2022-07-13 03:20:23,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,672 INFO L244 Elim1Store]: Index analysis took 101 ms [2022-07-13 03:20:23,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 251 treesize of output 698 [2022-07-13 03:20:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:23,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:23,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 656 [2022-07-13 03:20:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:24,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:24,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:24,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:24,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:24,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:24,358 INFO L244 Elim1Store]: Index analysis took 143 ms [2022-07-13 03:20:24,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 261 treesize of output 706 [2022-07-13 03:20:25,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:25,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:25,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:25,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 155 treesize of output 281 [2022-07-13 03:20:25,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:26,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 110 treesize of output 101 [2022-07-13 03:20:26,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2022-07-13 03:20:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:26,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:26,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:26,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 163 treesize of output 287 [2022-07-13 03:20:26,289 INFO L390 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 24 treesize of output 23 [2022-07-13 03:20:26,299 INFO L390 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 [2022-07-13 03:20:26,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:26,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-07-13 03:20:26,545 INFO L390 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 [2022-07-13 03:20:26,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2022-07-13 03:20:26,629 INFO L390 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 43 treesize of output 76 [2022-07-13 03:20:26,691 INFO L390 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 43 treesize of output 76 [2022-07-13 03:20:26,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 59 treesize of output 165 [2022-07-13 03:20:26,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 51 treesize of output 104 [2022-07-13 03:20:27,043 INFO L390 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 35 treesize of output 51 [2022-07-13 03:20:27,067 INFO L390 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 35 treesize of output 51 [2022-07-13 03:20:27,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 25 treesize of output 43 [2022-07-13 03:20:27,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:27,263 INFO L390 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 1 [2022-07-13 03:20:27,337 INFO L390 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 1056 treesize of output 1048 [2022-07-13 03:20:27,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,561 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-13 03:20:27,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 40 [2022-07-13 03:20:27,576 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-13 03:20:27,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 25 [2022-07-13 03:20:27,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 119 treesize of output 44 [2022-07-13 03:20:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:27,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:27,658 INFO L356 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2022-07-13 03:20:27,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 452 treesize of output 1 [2022-07-13 03:20:27,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:27,797 INFO L356 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-07-13 03:20:27,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 866 treesize of output 877 [2022-07-13 03:20:28,249 INFO L390 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 [2022-07-13 03:20:28,347 INFO L390 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 0 case distinctions, treesize of input 103 treesize of output 11 [2022-07-13 03:20:28,589 INFO L356 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2022-07-13 03:20:28,590 INFO L390 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 52 treesize of output 51 [2022-07-13 03:20:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:28,709 INFO L356 Elim1Store]: treesize reduction 47, result has 14.5 percent of original size [2022-07-13 03:20:28,710 INFO L390 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 57 treesize of output 53 [2022-07-13 03:20:28,714 INFO L390 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 41 treesize of output 36 [2022-07-13 03:20:28,718 INFO L390 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 29 treesize of output 23 [2022-07-13 03:20:28,741 INFO L390 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 [2022-07-13 03:20:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:20:28,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 03:20:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:20:28,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970340855] [2022-07-13 03:20:28,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 03:20:28,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896057211] [2022-07-13 03:20:28,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896057211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:20:28,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:20:28,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 03:20:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354718617] [2022-07-13 03:20:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:20:41,766 WARN L233 SmtUtils]: Spent 13.01s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 03:20:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:20:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 03:20:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 03:20:42,731 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) [2022-07-13 03:20:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:20:42,805 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-07-13 03:20:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 03:20:42,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2022-07-13 03:20:42,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2022-07-13 03:20:42,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 19 states and 23 transitions. [2022-07-13 03:20:42,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-07-13 03:20:42,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2022-07-13 03:20:42,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2022-07-13 03:20:42,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:20:42,817 INFO L369 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-13 03:20:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2022-07-13 03:20:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 03:20:42,834 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) [2022-07-13 03:20:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-07-13 03:20:42,835 INFO L392 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-13 03:20:42,835 INFO L374 stractBuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-13 03:20:42,835 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:20:42,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2022-07-13 03:20:42,836 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2022-07-13 03:20:42,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:20:42,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:20:42,837 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:20:42,837 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:20:42,837 INFO L752 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 [2022-07-13 03:20:42,837 INFO L754 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 [2022-07-13 03:20:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2022-07-13 03:20:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:42,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709854783] [2022-07-13 03:20:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:42,862 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:42,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506758344] [2022-07-13 03:20:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:42,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:42,896 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) [2022-07-13 03:20:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 03:20:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:20:42,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 03:20:42,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:20:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,066 INFO L356 Elim1Store]: treesize reduction 21, result has 46.2 percent of original size [2022-07-13 03:20:43,067 INFO L390 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 [2022-07-13 03:20:43,074 INFO L390 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 [2022-07-13 03:20:43,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,242 INFO L356 Elim1Store]: treesize reduction 133, result has 33.2 percent of original size [2022-07-13 03:20:43,243 INFO L390 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 377 [2022-07-13 03:20:43,261 INFO L390 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 [2022-07-13 03:20:43,298 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 03:20:43,298 INFO L390 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 [2022-07-13 03:20:43,418 INFO L390 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 [2022-07-13 03:20:43,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:43,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 64 [2022-07-13 03:20:43,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:43,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:43,724 INFO L390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2022-07-13 03:20:43,870 INFO L390 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 296 treesize of output 282 [2022-07-13 03:20:44,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 276 [2022-07-13 03:20:44,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:44,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:44,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 108 [2022-07-13 03:20:44,489 INFO L390 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 [2022-07-13 03:20:44,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 284 [2022-07-13 03:20:44,611 INFO L390 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 901 treesize of output 801 [2022-07-13 03:20:44,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:44,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 79 treesize of output 36 [2022-07-13 03:20:44,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:44,818 INFO L390 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 12 treesize of output 10 [2022-07-13 03:20:44,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:44,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 36 [2022-07-13 03:20:44,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 03:20:44,942 INFO L390 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 12 treesize of output 10 [2022-07-13 03:20:45,767 INFO L356 Elim1Store]: treesize reduction 8, result has 93.4 percent of original size [2022-07-13 03:20:45,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 306 [2022-07-13 03:20:46,557 INFO L390 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 13 treesize of output 9 [2022-07-13 03:20:46,562 INFO L390 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 27 treesize of output 21 [2022-07-13 03:20:46,567 INFO L390 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 25 treesize of output 21 [2022-07-13 03:20:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:20:46,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 03:20:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:20:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709854783] [2022-07-13 03:20:46,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 03:20:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506758344] [2022-07-13 03:20:46,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506758344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:20:46,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:20:46,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 03:20:46,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091172742] [2022-07-13 03:20:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:20:46,581 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:20:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1510934147, now seen corresponding path program 1 times [2022-07-13 03:20:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:46,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448495739] [2022-07-13 03:20:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:46,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875312063] [2022-07-13 03:20:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:46,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:46,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:46,609 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) [2022-07-13 03:20:46,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 03:20:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:46,670 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:20:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:46,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:20:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:20:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:20:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:20:47,703 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) [2022-07-13 03:20:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:20:47,710 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-07-13 03:20:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 03:20:47,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-07-13 03:20:47,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-13 03:20:47,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2022-07-13 03:20:47,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-07-13 03:20:47,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-13 03:20:47,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2022-07-13 03:20:47,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:20:47,713 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-13 03:20:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2022-07-13 03:20:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-13 03:20:47,714 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) [2022-07-13 03:20:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-13 03:20:47,715 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-13 03:20:47,715 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-13 03:20:47,715 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:20:47,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2022-07-13 03:20:47,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-13 03:20:47,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:20:47,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:20:47,716 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:20:47,716 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:20:47,716 INFO L752 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 [2022-07-13 03:20:47,717 INFO L754 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 [2022-07-13 03:20:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 28699821, now seen corresponding path program 1 times [2022-07-13 03:20:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:47,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581904027] [2022-07-13 03:20:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:47,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531139597] [2022-07-13 03:20:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:47,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:47,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:47,767 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) [2022-07-13 03:20:47,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 03:20:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:47,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:20:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:47,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:20:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1453675845, now seen corresponding path program 2 times [2022-07-13 03:20:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259239199] [2022-07-13 03:20:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:47,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:47,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209339786] [2022-07-13 03:20:47,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 03:20:47,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:47,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:47,911 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) [2022-07-13 03:20:47,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 03:20:48,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 03:20:48,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-13 03:20:48,008 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:20:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:20:48,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:20:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:20:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1341656857, now seen corresponding path program 1 times [2022-07-13 03:20:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:20:48,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317455247] [2022-07-13 03:20:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:20:48,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 03:20:48,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788300253] [2022-07-13 03:20:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:20:48,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:20:48,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:20:48,079 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) [2022-07-13 03:20:48,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 03:20:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:20:48,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 03:20:48,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:20:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:20:48,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 03:21:37,946 WARN L233 SmtUtils]: Spent 49.70s on a formula simplification. DAG size of input: 347 DAG size of output: 151 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-13 03:21:37,947 INFO L356 Elim1Store]: treesize reduction 1395, result has 28.2 percent of original size [2022-07-13 03:21:37,949 INFO L390 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 9069 [2022-07-13 03:21:38,980 INFO L390 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 [2022-07-13 03:21:39,904 INFO L390 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 [2022-07-13 03:21:41,004 INFO L390 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 [2022-07-13 03:21:43,421 INFO L390 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 [2022-07-13 03:21:45,504 INFO L390 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 [2022-07-13 03:21:46,350 INFO L390 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 [2022-07-13 03:22:05,141 INFO L390 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 [2022-07-13 03:22:20,466 INFO L390 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 [2022-07-13 03:22:55,039 INFO L390 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 [2022-07-13 03:22:55,094 WARN L234 Elim1Store]: Array PQE input equivalent to false