./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_2_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4130d48586bacb8e01e8525ec6ffcd9f272030d26882b368d1c87de47eeb037 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:25:53,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:25:53,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:25:53,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:25:53,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:25:53,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:25:53,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:25:53,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:25:53,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:25:53,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:25:53,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:25:53,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:25:53,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:25:53,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:25:53,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:25:53,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:25:53,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:25:53,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:25:53,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:25:53,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:25:53,660 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:25:53,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:25:53,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:25:53,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:25:53,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:25:53,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:25:53,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:25:53,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:25:53,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:25:53,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:25:53,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:25:53,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:25:53,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:25:53,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:25:53,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:25:53,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:25:53,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:25:53,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:25:53,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:25:53,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:25:53,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:25:53,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:25:53,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:25:53,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:25:53,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:25:53,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:25:53,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:25:53,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:25:53,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:25:53,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:25:53,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:25:53,707 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:25:53,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:25:53,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:25:53,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:25:53,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:25:53,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:25:53,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:25:53,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:25:53,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:25:53,709 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:25:53,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:25:53,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:25:53,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:25:53,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:25:53,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:25:53,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:25:53,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:25:53,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:25:53,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:25:53,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:25:53,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:25:53,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:25:53,713 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:25:53,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:25:53,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:25:53,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4130d48586bacb8e01e8525ec6ffcd9f272030d26882b368d1c87de47eeb037 [2022-07-13 20:25:53,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:25:53,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:25:53,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:25:53,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:25:53,975 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:25:53,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_2_2.i [2022-07-13 20:25:54,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1414d8e/7cb0fca327554eb2ba06d05919af571a/FLAGf6a737be6 [2022-07-13 20:25:54,473 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:25:54,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_2.i [2022-07-13 20:25:54,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1414d8e/7cb0fca327554eb2ba06d05919af571a/FLAGf6a737be6 [2022-07-13 20:25:54,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1414d8e/7cb0fca327554eb2ba06d05919af571a [2022-07-13 20:25:54,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:25:54,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:25:54,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:25:54,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:25:54,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:25:54,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141cec7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54, skipping insertion in model container [2022-07-13 20:25:54,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:25:54,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:25:54,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_2.i[1226,1239] [2022-07-13 20:25:54,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_2.i[2841,2854] [2022-07-13 20:25:54,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:25:54,665 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:25:54,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_2.i[1226,1239] [2022-07-13 20:25:54,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_2.i[2841,2854] [2022-07-13 20:25:54,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:25:54,692 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:25:54,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54 WrapperNode [2022-07-13 20:25:54,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:25:54,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:25:54,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:25:54,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:25:54,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,724 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2022-07-13 20:25:54,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:25:54,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:25:54,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:25:54,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:25:54,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:25:54,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:25:54,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:25:54,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:25:54,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (1/1) ... [2022-07-13 20:25:54,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:25:54,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:25:54,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:25:54,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:25:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:25:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-13 20:25:54,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-13 20:25:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 20:25:54,847 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 20:25:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:25:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:25:54,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:25:54,901 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:25:54,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:25:55,115 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:25:55,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:25:55,119 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:25:55,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:25:55 BoogieIcfgContainer [2022-07-13 20:25:55,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:25:55,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:25:55,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:25:55,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:25:55,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:25:54" (1/3) ... [2022-07-13 20:25:55,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1104690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:25:55, skipping insertion in model container [2022-07-13 20:25:55,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:25:54" (2/3) ... [2022-07-13 20:25:55,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1104690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:25:55, skipping insertion in model container [2022-07-13 20:25:55,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:25:55" (3/3) ... [2022-07-13 20:25:55,128 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_2.i [2022-07-13 20:25:55,138 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:25:55,138 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:25:55,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:25:55,175 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24388e7c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13cb207a [2022-07-13 20:25:55,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:25:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 20:25:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:25:55,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:25:55,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:25:55,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:25:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:25:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-07-13 20:25:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:25:55,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849103492] [2022-07-13 20:25:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:25:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:25:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:25:55,334 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 20:25:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:25:55,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849103492] [2022-07-13 20:25:55,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849103492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:25:55,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:25:55,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 20:25:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006453842] [2022-07-13 20:25:55,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:25:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:25:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:25:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:25:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:25:55,376 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:25:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:25:55,444 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2022-07-13 20:25:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:25:55,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 20:25:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:25:55,455 INFO L225 Difference]: With dead ends: 90 [2022-07-13 20:25:55,455 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 20:25:55,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:25:55,462 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:25:55,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:25:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 20:25:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-07-13 20:25:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 20:25:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-07-13 20:25:55,502 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-07-13 20:25:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:25:55,502 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-07-13 20:25:55,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:25:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-07-13 20:25:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:25:55,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:25:55,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:25:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:25:55,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:25:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:25:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-07-13 20:25:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:25:55,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826122883] [2022-07-13 20:25:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:25:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:25:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:25:55,586 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 20:25:55,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:25:55,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826122883] [2022-07-13 20:25:55,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826122883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:25:55,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:25:55,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:25:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923273038] [2022-07-13 20:25:55,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:25:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:25:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:25:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:25:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:25:55,596 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:25:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:25:55,678 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-07-13 20:25:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:25:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 20:25:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:25:55,679 INFO L225 Difference]: With dead ends: 36 [2022-07-13 20:25:55,679 INFO L226 Difference]: Without dead ends: 30 [2022-07-13 20:25:55,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:25:55,680 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:25:55,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:25:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-13 20:25:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-13 20:25:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 20:25:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-13 20:25:55,685 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-07-13 20:25:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:25:55,685 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-13 20:25:55,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:25:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-13 20:25:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 20:25:55,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:25:55,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:25:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:25:55,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:25:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:25:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-07-13 20:25:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:25:55,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853405335] [2022-07-13 20:25:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:25:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:25:55,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:25:55,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018131275] [2022-07-13 20:25:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:25:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:25:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:25:55,715 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 20:25:55,716 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 20:25:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:25:55,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 20:25:55,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:26:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:26:14,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:26:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:26:26,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:26:26,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853405335] [2022-07-13 20:26:26,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:26:26,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018131275] [2022-07-13 20:26:26,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018131275] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:26:26,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:26:26,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-13 20:26:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38224044] [2022-07-13 20:26:26,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:26:26,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 20:26:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:26:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 20:26:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=212, Unknown=6, NotChecked=0, Total=272 [2022-07-13 20:26:26,538 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:26:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:26:27,016 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-07-13 20:26:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:26:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-13 20:26:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:26:27,017 INFO L225 Difference]: With dead ends: 42 [2022-07-13 20:26:27,017 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 20:26:27,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=74, Invalid=262, Unknown=6, NotChecked=0, Total=342 [2022-07-13 20:26:27,018 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:26:27,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 231 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-07-13 20:26:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 20:26:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-07-13 20:26:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 20:26:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-07-13 20:26:27,023 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-07-13 20:26:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:26:27,024 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-07-13 20:26:27,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:26:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-07-13 20:26:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 20:26:27,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:26:27,025 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:26:27,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 20:26:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:26:27,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:26:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:26:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1561924787, now seen corresponding path program 2 times [2022-07-13 20:26:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:26:27,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422460520] [2022-07-13 20:26:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:26:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:26:27,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:26:27,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594999831] [2022-07-13 20:26:27,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 20:26:27,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:26:27,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:26:27,237 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 20:26:27,245 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 20:26:27,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 20:26:27,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 20:26:27,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 20:26:27,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:26:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:26:49,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:28:10,675 WARN L833 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (forall ((|ULTIMATE.start_gcd_test_~b#1| Int)) (or (= |ULTIMATE.start_gcd_test_~b#1| 0) (let ((.cse12 (mod |c_ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse13 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse9 (< |ULTIMATE.start_gcd_test_~b#1| 0)) (.cse17 (mod (+ |ULTIMATE.start_gcd_test_~b#1| .cse12) 256))) (let ((.cse14 (mod .cse12 256)) (.cse16 (mod (+ (* |ULTIMATE.start_gcd_test_~b#1| 255) .cse12) 256)) (.cse0 (not (<= .cse17 127))) (.cse1 (not .cse9)) (.cse3 (not (= (mod (mod |ULTIMATE.start_gcd_test_~b#1| .cse17) 256) 0))) (.cse4 (not .cse13)) (.cse5 (<= .cse17 |c_ULTIMATE.start_main1_~x~0#1|))) (let ((.cse8 (or .cse0 .cse1 .cse3 .cse4 .cse5)) (.cse10 (<= .cse16 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse11 (not (= (mod (mod |ULTIMATE.start_gcd_test_~b#1| .cse16) 256) 0))) (.cse7 (not (<= .cse16 127))) (.cse15 (<= .cse14 127))) (and (or (let ((.cse6 (or .cse13 (not (= (mod (mod |ULTIMATE.start_gcd_test_~b#1| .cse14) 256) 0)) (<= .cse14 |c_ULTIMATE.start_main1_~x~0#1|))) (.cse2 (= .cse12 0))) (and (or .cse0 (and (or .cse1 .cse2 .cse3 .cse4 .cse5) .cse6)) .cse6 (or .cse7 (and .cse8 .cse6 (or .cse9 (and .cse6 (or .cse10 .cse11 .cse2 .cse4))))))) (not .cse15)) (or (and .cse8 (or .cse10 .cse9 .cse11 .cse7 .cse4)) .cse15))))))))) is different from false [2022-07-13 20:29:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-13 20:29:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:29:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422460520] [2022-07-13 20:29:29,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:29:29,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594999831] [2022-07-13 20:29:29,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594999831] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:29:29,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:29:29,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2022-07-13 20:29:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185221154] [2022-07-13 20:29:29,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:29:29,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:29:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:29:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:29:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=199, Unknown=17, NotChecked=30, Total=306 [2022-07-13 20:29:29,487 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:29:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:29:29,863 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-07-13 20:29:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:29:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 20:29:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:29:29,866 INFO L225 Difference]: With dead ends: 42 [2022-07-13 20:29:29,866 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 20:29:29,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=60, Invalid=199, Unknown=17, NotChecked=30, Total=306 [2022-07-13 20:29:29,867 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:29:29,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 264 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-07-13 20:29:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 20:29:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-13 20:29:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 20:29:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-07-13 20:29:29,871 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2022-07-13 20:29:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:29:29,871 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-07-13 20:29:29,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:29:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-07-13 20:29:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 20:29:29,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:29:29,872 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:29:29,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:29:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 20:29:30,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:29:30,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:29:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1767906835, now seen corresponding path program 3 times [2022-07-13 20:29:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:29:30,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561072358] [2022-07-13 20:29:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:29:30,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:29:30,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:29:30,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650893979] [2022-07-13 20:29:30,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 20:29:30,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:29:30,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:29:30,086 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 20:29:30,087 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 20:29:30,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 20:29:30,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 20:29:30,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 20:29:30,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:30:15,831 WARN L233 SmtUtils]: Spent 11.14s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)