./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.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 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 17:38:15,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 17:38:15,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 17:38:15,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 17:38:15,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 17:38:15,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 17:38:15,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 17:38:15,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 17:38:15,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 17:38:15,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 17:38:15,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 17:38:15,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 17:38:15,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 17:38:15,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 17:38:15,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 17:38:15,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 17:38:15,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 17:38:15,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 17:38:15,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 17:38:15,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 17:38:15,954 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 17:38:15,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 17:38:15,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 17:38:15,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 17:38:15,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 17:38:15,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 17:38:15,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 17:38:15,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 17:38:15,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 17:38:15,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 17:38:15,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 17:38:15,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 17:38:15,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 17:38:15,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 17:38:15,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 17:38:15,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 17:38:15,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 17:38:15,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 17:38:15,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 17:38:15,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 17:38:15,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 17:38:15,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 17:38:15,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 17:38:15,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 17:38:15,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 17:38:15,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 17:38:15,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 17:38:15,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 17:38:15,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 17:38:15,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 17:38:15,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 17:38:15,999 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 17:38:16,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 17:38:16,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 17:38:16,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 17:38:16,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 17:38:16,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 17:38:16,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 17:38:16,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 17:38:16,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 17:38:16,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 17:38:16,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 17:38:16,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 17:38:16,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 17:38:16,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 17:38:16,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2022-07-12 17:38:16,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 17:38:16,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 17:38:16,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 17:38:16,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 17:38:16,210 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 17:38:16,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-07-12 17:38:16,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2cb27421/c0cb5787c3334b669f24bcd068b9f748/FLAG0449f369b [2022-07-12 17:38:16,691 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 17:38:16,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-07-12 17:38:16,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2cb27421/c0cb5787c3334b669f24bcd068b9f748/FLAG0449f369b [2022-07-12 17:38:16,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2cb27421/c0cb5787c3334b669f24bcd068b9f748 [2022-07-12 17:38:16,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 17:38:16,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 17:38:16,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 17:38:16,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 17:38:16,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 17:38:16,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:38:16" (1/1) ... [2022-07-12 17:38:16,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52aff2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:16, skipping insertion in model container [2022-07-12 17:38:16,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:38:16" (1/1) ... [2022-07-12 17:38:16,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 17:38:16,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 17:38:17,074 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/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-07-12 17:38:17,178 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/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-07-12 17:38:17,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 17:38:17,198 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 17:38:17,221 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/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-07-12 17:38:17,250 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/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-07-12 17:38:17,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 17:38:17,277 INFO L208 MainTranslator]: Completed translation [2022-07-12 17:38:17,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17 WrapperNode [2022-07-12 17:38:17,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 17:38:17,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 17:38:17,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 17:38:17,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 17:38:17,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,359 INFO L137 Inliner]: procedures = 177, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2022-07-12 17:38:17,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 17:38:17,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 17:38:17,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 17:38:17,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 17:38:17,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 17:38:17,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 17:38:17,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 17:38:17,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 17:38:17,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (1/1) ... [2022-07-12 17:38:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 17:38:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:17,461 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) [2022-07-12 17:38:17,491 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 [2022-07-12 17:38:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 17:38:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 17:38:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 17:38:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 17:38:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 17:38:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 17:38:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2022-07-12 17:38:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2022-07-12 17:38:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 17:38:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 17:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 17:38:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 17:38:17,695 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 17:38:17,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 17:38:18,486 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 17:38:18,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 17:38:18,491 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2022-07-12 17:38:18,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:38:18 BoogieIcfgContainer [2022-07-12 17:38:18,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 17:38:18,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 17:38:18,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 17:38:18,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 17:38:18,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:38:16" (1/3) ... [2022-07-12 17:38:18,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443992e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:38:18, skipping insertion in model container [2022-07-12 17:38:18,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:38:17" (2/3) ... [2022-07-12 17:38:18,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443992e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:38:18, skipping insertion in model container [2022-07-12 17:38:18,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:38:18" (3/3) ... [2022-07-12 17:38:18,499 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-1.i [2022-07-12 17:38:18,509 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 17:38:18,509 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 17:38:18,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 17:38:18,546 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@1b00ec6d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60a8005 [2022-07-12 17:38:18,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 17:38:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 17:38:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 17:38:18,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:18,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 17:38:18,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2022-07-12 17:38:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314508575] [2022-07-12 17:38:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 17:38:18,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:18,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314508575] [2022-07-12 17:38:18,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314508575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:18,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:18,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 17:38:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939841028] [2022-07-12 17:38:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:18,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 17:38:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 17:38:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 17:38:18,724 INFO L87 Difference]: Start difference. First operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:18,774 INFO L93 Difference]: Finished difference Result 450 states and 773 transitions. [2022-07-12 17:38:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 17:38:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-12 17:38:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:18,785 INFO L225 Difference]: With dead ends: 450 [2022-07-12 17:38:18,787 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 17:38:18,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 17:38:18,795 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:18,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 17:38:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 17:38:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-12 17:38:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 17:38:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2022-07-12 17:38:18,850 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2022-07-12 17:38:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:18,851 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2022-07-12 17:38:18,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2022-07-12 17:38:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 17:38:18,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:18,853 INFO L195 NwaCegarLoop]: 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] [2022-07-12 17:38:18,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 17:38:18,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2022-07-12 17:38:18,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:18,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950987165] [2022-07-12 17:38:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 17:38:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:18,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950987165] [2022-07-12 17:38:18,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950987165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:18,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:18,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 17:38:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495360943] [2022-07-12 17:38:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:18,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 17:38:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 17:38:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 17:38:18,964 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-07-12 17:38:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:19,252 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2022-07-12 17:38:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 17:38:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2022-07-12 17:38:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:19,255 INFO L225 Difference]: With dead ends: 463 [2022-07-12 17:38:19,255 INFO L226 Difference]: Without dead ends: 338 [2022-07-12 17:38:19,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 17:38:19,257 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 143 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:19,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 770 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 17:38:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-07-12 17:38:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2022-07-12 17:38:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 215 states have internal predecessors, (269), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 17:38:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2022-07-12 17:38:19,267 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2022-07-12 17:38:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:19,268 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2022-07-12 17:38:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-07-12 17:38:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2022-07-12 17:38:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 17:38:19,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:19,269 INFO L195 NwaCegarLoop]: 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] [2022-07-12 17:38:19,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 17:38:19,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 385113170, now seen corresponding path program 1 times [2022-07-12 17:38:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:19,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092384707] [2022-07-12 17:38:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:19,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:38:19,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698245618] [2022-07-12 17:38:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:19,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:19,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:19,362 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) [2022-07-12 17:38:19,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 17:38:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:19,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 17:38:19,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:38:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 17:38:19,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 17:38:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092384707] [2022-07-12 17:38:19,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:38:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698245618] [2022-07-12 17:38:19,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698245618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:19,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:19,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 17:38:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928578993] [2022-07-12 17:38:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 17:38:19,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 17:38:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 17:38:19,834 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:19,887 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2022-07-12 17:38:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 17:38:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-12 17:38:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:19,889 INFO L225 Difference]: With dead ends: 465 [2022-07-12 17:38:19,889 INFO L226 Difference]: Without dead ends: 245 [2022-07-12 17:38:19,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 17:38:19,891 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:19,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 559 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 17:38:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-12 17:38:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2022-07-12 17:38:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 235 states have internal predecessors, (289), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 17:38:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 329 transitions. [2022-07-12 17:38:19,900 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 329 transitions. Word has length 61 [2022-07-12 17:38:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:19,901 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 329 transitions. [2022-07-12 17:38:19,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 329 transitions. [2022-07-12 17:38:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 17:38:19,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:19,902 INFO L195 NwaCegarLoop]: 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] [2022-07-12 17:38:19,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 17:38:20,118 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 [2022-07-12 17:38:20,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1817919146, now seen corresponding path program 1 times [2022-07-12 17:38:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348561820] [2022-07-12 17:38:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:20,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:38:20,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34432692] [2022-07-12 17:38:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:20,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:20,241 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) [2022-07-12 17:38:20,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 17:38:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 17:38:20,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:38:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 17:38:20,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 17:38:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348561820] [2022-07-12 17:38:20,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:38:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34432692] [2022-07-12 17:38:20,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34432692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:20,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:20,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 17:38:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173486746] [2022-07-12 17:38:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 17:38:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 17:38:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 17:38:20,793 INFO L87 Difference]: Start difference. First operand 244 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:20,844 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2022-07-12 17:38:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 17:38:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-12 17:38:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:20,846 INFO L225 Difference]: With dead ends: 476 [2022-07-12 17:38:20,846 INFO L226 Difference]: Without dead ends: 236 [2022-07-12 17:38:20,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 17:38:20,848 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 213 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:20,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 17:38:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-12 17:38:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2022-07-12 17:38:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 221 states have internal predecessors, (268), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 17:38:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2022-07-12 17:38:20,856 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 61 [2022-07-12 17:38:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:20,856 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2022-07-12 17:38:20,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2022-07-12 17:38:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 17:38:20,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:20,858 INFO L195 NwaCegarLoop]: 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] [2022-07-12 17:38:20,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 17:38:21,073 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 [2022-07-12 17:38:21,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1660994696, now seen corresponding path program 1 times [2022-07-12 17:38:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:21,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183338655] [2022-07-12 17:38:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:21,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:38:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551742367] [2022-07-12 17:38:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:21,178 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) [2022-07-12 17:38:21,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 17:38:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:21,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 17:38:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:38:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 17:38:21,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 17:38:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183338655] [2022-07-12 17:38:21,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:38:21,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551742367] [2022-07-12 17:38:21,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551742367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:21,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 17:38:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705097780] [2022-07-12 17:38:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 17:38:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 17:38:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 17:38:21,900 INFO L87 Difference]: Start difference. First operand 230 states and 308 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:21,973 INFO L93 Difference]: Finished difference Result 567 states and 751 transitions. [2022-07-12 17:38:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 17:38:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-12 17:38:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:21,975 INFO L225 Difference]: With dead ends: 567 [2022-07-12 17:38:21,975 INFO L226 Difference]: Without dead ends: 341 [2022-07-12 17:38:21,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 17:38:21,976 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 98 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:21,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 612 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 17:38:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-12 17:38:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2022-07-12 17:38:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 328 states have internal predecessors, (401), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-12 17:38:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 443 transitions. [2022-07-12 17:38:21,984 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 443 transitions. Word has length 61 [2022-07-12 17:38:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:21,985 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 443 transitions. [2022-07-12 17:38:21,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 17:38:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 443 transitions. [2022-07-12 17:38:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 17:38:21,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:21,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-07-12 17:38:22,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 17:38:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:22,206 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:22,206 INFO L85 PathProgramCache]: Analyzing trace with hash -999436228, now seen corresponding path program 1 times [2022-07-12 17:38:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:22,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340384427] [2022-07-12 17:38:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:22,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:38:22,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545375763] [2022-07-12 17:38:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:22,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:22,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 17:38:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 17:38:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:38:28,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 17:38:28,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:38:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 17:38:28,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 17:38:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:38:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340384427] [2022-07-12 17:38:28,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:38:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545375763] [2022-07-12 17:38:28,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545375763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 17:38:28,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 17:38:28,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 17:38:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979316199] [2022-07-12 17:38:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 17:38:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 17:38:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:38:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 17:38:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 17:38:28,953 INFO L87 Difference]: Start difference. First operand 338 states and 443 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 17:38:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:38:28,986 INFO L93 Difference]: Finished difference Result 631 states and 839 transitions. [2022-07-12 17:38:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 17:38:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-07-12 17:38:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:38:28,989 INFO L225 Difference]: With dead ends: 631 [2022-07-12 17:38:28,989 INFO L226 Difference]: Without dead ends: 341 [2022-07-12 17:38:28,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 17:38:28,991 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 17:38:28,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 17:38:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-12 17:38:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-07-12 17:38:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 314 states have (on average 1.286624203821656) internal successors, (404), 331 states have internal predecessors, (404), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2022-07-12 17:38:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 447 transitions. [2022-07-12 17:38:29,004 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 447 transitions. Word has length 76 [2022-07-12 17:38:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:38:29,004 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 447 transitions. [2022-07-12 17:38:29,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 17:38:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 447 transitions. [2022-07-12 17:38:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 17:38:29,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:38:29,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-07-12 17:38:29,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 17:38:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:29,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:38:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:38:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1611628322, now seen corresponding path program 1 times [2022-07-12 17:38:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:38:29,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153219761] [2022-07-12 17:38:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:29,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:38:29,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:38:29,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398081675] [2022-07-12 17:38:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:38:29,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:38:29,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:38:29,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 17:38:29,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 17:39:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 17:39:17,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 17:39:17,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:39:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 17:39:17,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 17:39:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 17:39:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:39:17,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153219761] [2022-07-12 17:39:17,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:39:17,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398081675] [2022-07-12 17:39:17,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398081675] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 17:39:17,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 17:39:17,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 17:39:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549883004] [2022-07-12 17:39:17,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 17:39:17,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 17:39:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:39:17,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 17:39:17,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 17:39:17,470 INFO L87 Difference]: Start difference. First operand 341 states and 447 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 17:39:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:39:17,566 INFO L93 Difference]: Finished difference Result 645 states and 861 transitions. [2022-07-12 17:39:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 17:39:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2022-07-12 17:39:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:39:17,568 INFO L225 Difference]: With dead ends: 645 [2022-07-12 17:39:17,568 INFO L226 Difference]: Without dead ends: 350 [2022-07-12 17:39:17,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-12 17:39:17,570 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 18 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 17:39:17,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1465 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 17:39:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-12 17:39:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-07-12 17:39:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2919254658385093) internal successors, (416), 339 states have internal predecessors, (416), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2022-07-12 17:39:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 460 transitions. [2022-07-12 17:39:17,579 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 460 transitions. Word has length 78 [2022-07-12 17:39:17,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:39:17,579 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 460 transitions. [2022-07-12 17:39:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 17:39:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 460 transitions. [2022-07-12 17:39:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 17:39:17,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:39:17,581 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 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] [2022-07-12 17:39:17,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 17:39:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:39:17,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:39:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:39:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1236091332, now seen corresponding path program 2 times [2022-07-12 17:39:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:39:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134234470] [2022-07-12 17:39:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:39:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:39:17,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:39:17,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921413828] [2022-07-12 17:39:17,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 17:39:17,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:39:17,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:39:17,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 17:39:17,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 17:39:37,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 17:39:37,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 17:39:37,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 17:39:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 17:39:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 17:39:37,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 17:39:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 17:39:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 17:39:37,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134234470] [2022-07-12 17:39:37,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 17:39:37,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921413828] [2022-07-12 17:39:37,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921413828] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 17:39:37,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 17:39:37,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-07-12 17:39:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930520259] [2022-07-12 17:39:37,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 17:39:37,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 17:39:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 17:39:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 17:39:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-12 17:39:37,608 INFO L87 Difference]: Start difference. First operand 350 states and 460 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 17:39:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 17:39:37,834 INFO L93 Difference]: Finished difference Result 693 states and 918 transitions. [2022-07-12 17:39:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 17:39:37,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-07-12 17:39:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 17:39:37,836 INFO L225 Difference]: With dead ends: 693 [2022-07-12 17:39:37,836 INFO L226 Difference]: Without dead ends: 350 [2022-07-12 17:39:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-07-12 17:39:37,837 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 231 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 17:39:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1790 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 17:39:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-12 17:39:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2022-07-12 17:39:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 320 states have (on average 1.29375) internal successors, (414), 337 states have internal predecessors, (414), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2022-07-12 17:39:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 457 transitions. [2022-07-12 17:39:37,846 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 457 transitions. Word has length 82 [2022-07-12 17:39:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 17:39:37,846 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 457 transitions. [2022-07-12 17:39:37,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 17:39:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 457 transitions. [2022-07-12 17:39:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 17:39:37,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 17:39:37,847 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 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] [2022-07-12 17:39:37,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 17:39:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:39:38,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 17:39:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 17:39:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash -715057348, now seen corresponding path program 3 times [2022-07-12 17:39:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 17:39:38,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901507306] [2022-07-12 17:39:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 17:39:38,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 17:39:38,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 17:39:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459433833] [2022-07-12 17:39:38,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 17:39:38,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 17:39:38,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 17:39:38,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 17:39:38,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process