./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/gcd-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/gcd-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 abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:58:07,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:58:07,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:58:07,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:58:07,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:58:07,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:58:07,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:58:07,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:58:07,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:58:07,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:58:07,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:58:07,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:58:07,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:58:07,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:58:07,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:58:07,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:58:07,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:58:07,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:58:07,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:58:07,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:58:07,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:58:07,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:58:07,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:58:07,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:58:07,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:58:07,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:58:07,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:58:07,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:58:07,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:58:07,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:58:07,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:58:07,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:58:07,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:58:07,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:58:07,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:58:07,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:58:07,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:58:07,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:58:07,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:58:07,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:58:07,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:58:07,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:58:07,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:58:07,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:58:07,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:58:07,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:58:07,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:58:07,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:58:07,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:58:07,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:58:07,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:58:07,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:58:07,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:07,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:58:07,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:58:07,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:58:07,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:58:07,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:58:07,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2021-12-21 14:58:08,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:58:08,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:58:08,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:58:08,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:58:08,124 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:58:08,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/gcd-2.i [2021-12-21 14:58:08,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18019b4ea/0721e1351e284a3d8f3f654c8a9c8ac3/FLAG9a5b98ce4 [2021-12-21 14:58:08,553 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:58:08,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i [2021-12-21 14:58:08,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18019b4ea/0721e1351e284a3d8f3f654c8a9c8ac3/FLAG9a5b98ce4 [2021-12-21 14:58:08,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18019b4ea/0721e1351e284a3d8f3f654c8a9c8ac3 [2021-12-21 14:58:08,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:58:08,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:58:08,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:08,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:58:08,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:58:08,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:08" (1/1) ... [2021-12-21 14:58:08,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d18229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:08, skipping insertion in model container [2021-12-21 14:58:08,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:08" (1/1) ... [2021-12-21 14:58:08,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:58:08,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:58:09,146 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/pthread-atomic/gcd-2.i[938,951] [2021-12-21 14:58:09,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:09,324 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:58:09,336 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/pthread-atomic/gcd-2.i[938,951] [2021-12-21 14:58:09,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:09,393 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:58:09,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09 WrapperNode [2021-12-21 14:58:09,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:09,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:09,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:58:09,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:58:09,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,452 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 122 [2021-12-21 14:58:09,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:09,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:58:09,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:58:09,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:58:09,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:58:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:58:09,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:58:09,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:58:09,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (1/1) ... [2021-12-21 14:58:09,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:58:09,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:58:09,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:58:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 14:58:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 14:58:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:58:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 14:58:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 14:58:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2021-12-21 14:58:09,577 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2021-12-21 14:58:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2021-12-21 14:58:09,577 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2021-12-21 14:58:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:58:09,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:58:09,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:58:09,579 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 14:58:09,691 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:58:09,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:58:09,925 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:58:09,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:58:09,955 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 14:58:09,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:09 BoogieIcfgContainer [2021-12-21 14:58:09,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:58:09,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:58:09,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:58:09,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:58:09,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:58:08" (1/3) ... [2021-12-21 14:58:09,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53841236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:09, skipping insertion in model container [2021-12-21 14:58:09,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:09" (2/3) ... [2021-12-21 14:58:09,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53841236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:09, skipping insertion in model container [2021-12-21 14:58:09,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:09" (3/3) ... [2021-12-21 14:58:09,965 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2021-12-21 14:58:09,968 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 14:58:09,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:58:09,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-21 14:58:09,969 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 14:58:09,998 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:09,998 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,004 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,005 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,007 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,007 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,007 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,008 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,008 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,008 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,008 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,011 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,012 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,012 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,012 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,013 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,013 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,013 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,013 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:10,016 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 14:58:10,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:58:10,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:58:10,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-21 14:58:10,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 153 transitions, 322 flow [2021-12-21 14:58:10,120 INFO L129 PetriNetUnfolder]: 12/151 cut-off events. [2021-12-21 14:58:10,121 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 14:58:10,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 12/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2021-12-21 14:58:10,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 153 transitions, 322 flow [2021-12-21 14:58:10,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 141 transitions, 294 flow [2021-12-21 14:58:10,149 INFO L129 PetriNetUnfolder]: 10/124 cut-off events. [2021-12-21 14:58:10,149 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 14:58:10,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:10,150 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:10,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 14:58:10,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -690552940, now seen corresponding path program 1 times [2021-12-21 14:58:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:10,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406504387] [2021-12-21 14:58:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:10,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:10,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:10,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406504387] [2021-12-21 14:58:10,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406504387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:10,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:10,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:58:10,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623706700] [2021-12-21 14:58:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:10,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:58:10,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:58:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:58:10,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 153 [2021-12-21 14:58:10,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 294 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:10,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:10,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 153 [2021-12-21 14:58:10,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:10,476 INFO L129 PetriNetUnfolder]: 9/152 cut-off events. [2021-12-21 14:58:10,476 INFO L130 PetriNetUnfolder]: For 17/18 co-relation queries the response was YES. [2021-12-21 14:58:10,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 152 events. 9/152 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 16/156 useless extension candidates. Maximal degree in co-relation 80. Up to 17 conditions per place. [2021-12-21 14:58:10,481 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 6 selfloop transitions, 0 changer transitions 5/130 dead transitions. [2021-12-21 14:58:10,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 284 flow [2021-12-21 14:58:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:58:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 14:58:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2021-12-21 14:58:10,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9248366013071896 [2021-12-21 14:58:10,494 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2021-12-21 14:58:10,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2021-12-21 14:58:10,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:10,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2021-12-21 14:58:10,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:10,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:10,508 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:10,510 INFO L186 Difference]: Start difference. First operand has 137 places, 141 transitions, 294 flow. Second operand 2 states and 283 transitions. [2021-12-21 14:58:10,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 284 flow [2021-12-21 14:58:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 14:58:10,516 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 254 flow [2021-12-21 14:58:10,518 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-21 14:58:10,521 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2021-12-21 14:58:10,521 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 254 flow [2021-12-21 14:58:10,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:10,521 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:10,522 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:10,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:58:10,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 14:58:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -947970219, now seen corresponding path program 1 times [2021-12-21 14:58:10,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:10,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90001311] [2021-12-21 14:58:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:10,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:10,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 14:58:10,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430919753] [2021-12-21 14:58:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:10,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:58:10,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:58:10,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:58:10,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 14:58:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:10,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 14:58:10,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:58:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:11,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:58:11,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:11,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90001311] [2021-12-21 14:58:11,649 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 14:58:11,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430919753] [2021-12-21 14:58:11,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430919753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:11,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:11,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 14:58:11,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956118315] [2021-12-21 14:58:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:11,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 14:58:11,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 14:58:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 14:58:11,659 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2021-12-21 14:58:11,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 254 flow. Second operand has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:11,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:11,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2021-12-21 14:58:11,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:12,336 INFO L129 PetriNetUnfolder]: 41/278 cut-off events. [2021-12-21 14:58:12,337 INFO L130 PetriNetUnfolder]: For 10/18 co-relation queries the response was YES. [2021-12-21 14:58:12,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 278 events. 41/278 cut-off events. For 10/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 596 event pairs, 18 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 443. Up to 77 conditions per place. [2021-12-21 14:58:12,339 INFO L132 encePairwiseOnDemand]: 134/153 looper letters, 80 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2021-12-21 14:58:12,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 165 transitions, 533 flow [2021-12-21 14:58:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 14:58:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-21 14:58:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1449 transitions. [2021-12-21 14:58:12,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5261437908496732 [2021-12-21 14:58:12,347 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1449 transitions. [2021-12-21 14:58:12,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1449 transitions. [2021-12-21 14:58:12,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:12,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1449 transitions. [2021-12-21 14:58:12,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 80.5) internal successors, (1449), 18 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:12,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 153.0) internal successors, (2907), 19 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:12,359 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 153.0) internal successors, (2907), 19 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:12,360 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 254 flow. Second operand 18 states and 1449 transitions. [2021-12-21 14:58:12,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 165 transitions, 533 flow [2021-12-21 14:58:12,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 165 transitions, 533 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 14:58:12,365 INFO L242 Difference]: Finished difference. Result has 153 places, 135 transitions, 352 flow [2021-12-21 14:58:12,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=352, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2021-12-21 14:58:12,367 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 16 predicate places. [2021-12-21 14:58:12,367 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 352 flow [2021-12-21 14:58:12,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:12,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:12,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:12,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 14:58:12,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:58:12,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-21 14:58:12,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:12,592 INFO L85 PathProgramCache]: Analyzing trace with hash 550151925, now seen corresponding path program 1 times [2021-12-21 14:58:12,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:12,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490097495] [2021-12-21 14:58:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:12,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:12,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 14:58:12,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870042084] [2021-12-21 14:58:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:12,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:58:12,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:58:12,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:58:12,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 14:58:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:12,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-21 14:58:12,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:58:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:14,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 14:58:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:39,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:39,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490097495] [2021-12-21 14:58:39,229 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 14:58:39,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870042084] [2021-12-21 14:58:39,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870042084] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 14:58:39,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 14:58:39,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 33 [2021-12-21 14:58:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506446428] [2021-12-21 14:58:39,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 14:58:39,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 14:58:39,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:39,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 14:58:39,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=958, Unknown=4, NotChecked=0, Total=1056 [2021-12-21 14:58:39,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 153 [2021-12-21 14:58:39,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 352 flow. Second operand has 33 states, 33 states have (on average 73.66666666666667) internal successors, (2431), 33 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:39,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:39,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 153 [2021-12-21 14:58:39,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:41,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:58:47,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:58:50,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:58:54,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:58:59,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:01,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:03,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:07,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:09,111 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (< 0 (mod |c_ULTIMATE.start_main_~b_in~0#1| 4294967296)))) (let ((.cse1 (not .cse0)) (.cse5 (mod |c_ULTIMATE.start_main_~a_in~0#1| 4294967296)) (.cse4 (mod c_~a~0 4294967296))) (and (or (and .cse0 (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (and (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) .cse1)) .cse0 (let ((.cse3 (mod c_~b~0 4294967296))) (or (let ((.cse2 (* 4294967295 .cse3))) (and (not (= (mod (+ .cse2 c_~a~0) 4294967296) 0)) (or (not (= (mod (+ (* 4294967295 c_~b~0) .cse2 c_~a~0) 4294967296) 0)) (not (< .cse3 .cse4))))) (= (mod (mod .cse5 .cse3) 4294967296) 0))) (< 0 (mod |c_ULTIMATE.start_start_~b_in#1| 4294967296)) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0) (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) .cse1)) (= |c_ULTIMATE.start_main_~a_in~0#1| |c_ULTIMATE.start_start_#in~a_in#1|) (= (mod (mod .cse5 .cse4) 4294967296) 0) (= |c_ULTIMATE.start_main_~a_in~0#1| |c_ULTIMATE.start_start_~a_in#1|) (< 0 (mod |c_ULTIMATE.start_start_#in~b_in#1| 4294967296))))) is different from true [2021-12-21 14:59:13,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:15,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:17,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:19,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 14:59:21,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []