./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_BER_test8-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 17:01:53,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 17:01:53,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 17:01:53,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 17:01:53,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 17:01:53,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 17:01:53,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 17:01:53,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 17:01:53,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 17:01:53,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 17:01:53,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 17:01:53,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 17:01:53,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 17:01:53,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 17:01:53,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 17:01:53,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 17:01:53,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 17:01:53,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 17:01:53,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 17:01:53,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 17:01:53,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 17:01:53,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 17:01:53,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 17:01:53,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 17:01:53,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 17:01:53,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 17:01:53,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 17:01:53,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 17:01:53,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 17:01:53,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 17:01:53,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 17:01:53,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 17:01:53,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 17:01:53,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 17:01:53,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 17:01:53,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 17:01:53,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 17:01:53,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 17:01:53,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 17:01:53,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 17:01:53,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 17:01:53,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-18 17:01:53,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 17:01:53,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 17:01:53,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 17:01:53,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 17:01:53,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 17:01:53,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 17:01:53,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 17:01:53,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 17:01:53,390 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 17:01:53,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 17:01:53,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 17:01:53,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 17:01:53,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 17:01:53,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 17:01:53,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 17:01:53,393 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 17:01:53,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 17:01:53,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 17:01:53,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 17:01:53,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2021-12-18 17:01:53,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 17:01:53,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 17:01:53,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 17:01:53,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 17:01:53,644 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 17:01:53,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2021-12-18 17:01:53,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b5fa7d1/7121d99f06f948cb8eb30fa06b6fc0ba/FLAG573cf3050 [2021-12-18 17:01:54,093 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 17:01:54,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2021-12-18 17:01:54,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b5fa7d1/7121d99f06f948cb8eb30fa06b6fc0ba/FLAG573cf3050 [2021-12-18 17:01:54,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b5fa7d1/7121d99f06f948cb8eb30fa06b6fc0ba [2021-12-18 17:01:54,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 17:01:54,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 17:01:54,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 17:01:54,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 17:01:54,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 17:01:54,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:54,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514cb3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54, skipping insertion in model container [2021-12-18 17:01:54,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:54,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 17:01:54,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 17:01:54,740 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_BER_test8-2.i[33021,33034] [2021-12-18 17:01:54,798 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_BER_test8-2.i[45234,45247] [2021-12-18 17:01:54,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 17:01:54,814 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 17:01:54,835 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_BER_test8-2.i[33021,33034] [2021-12-18 17:01:54,873 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_BER_test8-2.i[45234,45247] [2021-12-18 17:01:54,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 17:01:54,908 INFO L208 MainTranslator]: Completed translation [2021-12-18 17:01:54,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54 WrapperNode [2021-12-18 17:01:54,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 17:01:54,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 17:01:54,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 17:01:54,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 17:01:54,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:54,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,027 INFO L137 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-12-18 17:01:55,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 17:01:55,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 17:01:55,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 17:01:55,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 17:01:55,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 17:01:55,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 17:01:55,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 17:01:55,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 17:01:55,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (1/1) ... [2021-12-18 17:01:55,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 17:01:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:01:55,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 17:01:55,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 17:01:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 17:01:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 17:01:55,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 17:01:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 17:01:55,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 17:01:55,221 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-18 17:01:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-18 17:01:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 17:01:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 17:01:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 17:01:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 17:01:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 17:01:55,428 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 17:01:55,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 17:01:56,113 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 17:01:56,119 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 17:01:56,120 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-12-18 17:01:56,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:01:56 BoogieIcfgContainer [2021-12-18 17:01:56,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 17:01:56,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 17:01:56,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 17:01:56,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 17:01:56,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:01:54" (1/3) ... [2021-12-18 17:01:56,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e43bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:01:56, skipping insertion in model container [2021-12-18 17:01:56,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:01:54" (2/3) ... [2021-12-18 17:01:56,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e43bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:01:56, skipping insertion in model container [2021-12-18 17:01:56,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:01:56" (3/3) ... [2021-12-18 17:01:56,128 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2021-12-18 17:01:56,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 17:01:56,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 17:01:56,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 17:01:56,168 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 17:01:56,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 17:01:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 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) [2021-12-18 17:01:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 17:01:56,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:56,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 17:01:56,188 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:01:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:01:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-18 17:01:56,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:01:56,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027682932] [2021-12-18 17:01:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:56,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:01:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:01:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:01:56,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:01:56,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027682932] [2021-12-18 17:01:56,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027682932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:01:56,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:01:56,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 17:01:56,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131261645] [2021-12-18 17:01:56,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:01:56,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 17:01:56,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:01:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 17:01:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 17:01:56,322 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 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) [2021-12-18 17:01:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:01:56,355 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-12-18 17:01:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 17:01:56,357 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 [2021-12-18 17:01:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:01:56,372 INFO L225 Difference]: With dead ends: 508 [2021-12-18 17:01:56,373 INFO L226 Difference]: Without dead ends: 222 [2021-12-18 17:01:56,376 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:01:56,379 INFO L933 BasicCegarLoop]: 351 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, 351 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 [2021-12-18 17:01:56,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 17:01:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-18 17:01:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-18 17:01:56,428 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) [2021-12-18 17:01:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-18 17:01:56,431 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-18 17:01:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:01:56,431 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-18 17:01:56,432 INFO L471 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) [2021-12-18 17:01:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-18 17:01:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 17:01:56,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:56,434 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:01:56,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 17:01:56,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:01:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:01:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-18 17:01:56,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:01:56,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141955724] [2021-12-18 17:01:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:56,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:01:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:01:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:01:56,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:01:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141955724] [2021-12-18 17:01:56,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141955724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:01:56,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:01:56,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 17:01:56,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830815762] [2021-12-18 17:01:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:01:56,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 17:01:56,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:01:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 17:01:56,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 17:01:56,495 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) [2021-12-18 17:01:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:01:56,778 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2021-12-18 17:01:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 17:01:56,778 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 [2021-12-18 17:01:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:01:56,780 INFO L225 Difference]: With dead ends: 463 [2021-12-18 17:01:56,781 INFO L226 Difference]: Without dead ends: 338 [2021-12-18 17:01:56,781 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:01:56,782 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 143 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 17:01:56,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 782 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 17:01:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-18 17:01:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2021-12-18 17:01:56,795 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) [2021-12-18 17:01:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2021-12-18 17:01:56,797 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2021-12-18 17:01:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:01:56,797 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2021-12-18 17:01:56,797 INFO L471 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) [2021-12-18 17:01:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2021-12-18 17:01:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-18 17:01:56,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:56,799 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:01:56,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 17:01:56,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:01:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:01:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-12-18 17:01:56,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:01:56,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403507343] [2021-12-18 17:01:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:56,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:01:56,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:01:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272008251] [2021-12-18 17:01:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:56,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:01:56,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:01:56,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:01:56,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 17:01:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:01:57,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 17:01:57,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:01:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:01:57,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 17:01:57,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:01:57,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403507343] [2021-12-18 17:01:57,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:01:57,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272008251] [2021-12-18 17:01:57,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272008251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:01:57,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:01:57,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 17:01:57,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336425403] [2021-12-18 17:01:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:01:57,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 17:01:57,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:01:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 17:01:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 17:01:57,546 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) [2021-12-18 17:01:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:01:57,598 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2021-12-18 17:01:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 17:01:57,599 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 [2021-12-18 17:01:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:01:57,602 INFO L225 Difference]: With dead ends: 465 [2021-12-18 17:01:57,602 INFO L226 Difference]: Without dead ends: 245 [2021-12-18 17:01:57,603 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:01:57,605 INFO L933 BasicCegarLoop]: 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 [2021-12-18 17:01:57,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 559 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 17:01:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-18 17:01:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-12-18 17:01:57,629 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) [2021-12-18 17:01:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 329 transitions. [2021-12-18 17:01:57,631 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 329 transitions. Word has length 61 [2021-12-18 17:01:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:01:57,632 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 329 transitions. [2021-12-18 17:01:57,632 INFO L471 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) [2021-12-18 17:01:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 329 transitions. [2021-12-18 17:01:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-18 17:01:57,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:57,637 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:01:57,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 17:01:57,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:01:57,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:01:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:01:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1749706579, now seen corresponding path program 1 times [2021-12-18 17:01:57,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:01:57,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445575933] [2021-12-18 17:01:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:57,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:01:57,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:01:57,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446763701] [2021-12-18 17:01:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:57,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:01:57,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:01:57,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:01:57,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 17:01:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:01:58,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 17:01:58,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:01:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:01:58,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 17:01:58,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:01:58,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445575933] [2021-12-18 17:01:58,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:01:58,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446763701] [2021-12-18 17:01:58,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446763701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:01:58,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:01:58,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 17:01:58,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605326609] [2021-12-18 17:01:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:01:58,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 17:01:58,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:01:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 17:01:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 17:01:58,632 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) [2021-12-18 17:01:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:01:58,710 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2021-12-18 17:01:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 17:01:58,711 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 [2021-12-18 17:01:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:01:58,712 INFO L225 Difference]: With dead ends: 476 [2021-12-18 17:01:58,713 INFO L226 Difference]: Without dead ends: 236 [2021-12-18 17:01:58,713 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:01:58,715 INFO L933 BasicCegarLoop]: 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 17:01:58,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 17:01:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-18 17:01:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-12-18 17:01:58,725 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) [2021-12-18 17:01:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2021-12-18 17:01:58,726 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 61 [2021-12-18 17:01:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:01:58,726 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2021-12-18 17:01:58,727 INFO L471 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) [2021-12-18 17:01:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2021-12-18 17:01:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-18 17:01:58,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:58,731 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:01:58,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 17:01:58,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-18 17:01:58,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:01:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:01:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2021-12-18 17:01:58,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:01:58,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292425549] [2021-12-18 17:01:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:58,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:01:59,040 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:01:59,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27160884] [2021-12-18 17:01:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:01:59,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:01:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:01:59,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:01:59,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 17:01:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:01:59,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 17:01:59,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:01:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:01:59,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 17:01:59,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:01:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292425549] [2021-12-18 17:01:59,775 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:01:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27160884] [2021-12-18 17:01:59,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27160884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:01:59,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:01:59,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 17:01:59,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891944394] [2021-12-18 17:01:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:01:59,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 17:01:59,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:01:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 17:01:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 17:01:59,777 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) [2021-12-18 17:01:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:01:59,838 INFO L93 Difference]: Finished difference Result 567 states and 751 transitions. [2021-12-18 17:01:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 17:01:59,838 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 [2021-12-18 17:01:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:01:59,840 INFO L225 Difference]: With dead ends: 567 [2021-12-18 17:01:59,840 INFO L226 Difference]: Without dead ends: 341 [2021-12-18 17:01:59,841 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:01:59,841 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 98 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 17:01:59,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 616 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 17:01:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-18 17:01:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2021-12-18 17:01:59,849 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) [2021-12-18 17:01:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 443 transitions. [2021-12-18 17:01:59,850 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 443 transitions. Word has length 61 [2021-12-18 17:01:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:01:59,851 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 443 transitions. [2021-12-18 17:01:59,852 INFO L471 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) [2021-12-18 17:01:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 443 transitions. [2021-12-18 17:01:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-18 17:01:59,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:01:59,854 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:01:59,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 17:02:00,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:00,061 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:02:00,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:02:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2021-12-18 17:02:00,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:02:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185102694] [2021-12-18 17:02:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:02:00,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:02:00,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:02:00,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703219147] [2021-12-18 17:02:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:02:00,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:00,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:02:00,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:02:00,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 17:02:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:02:00,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 17:02:00,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:02:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 17:02:00,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 17:02:00,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:02:00,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185102694] [2021-12-18 17:02:00,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:02:00,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703219147] [2021-12-18 17:02:00,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703219147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 17:02:00,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 17:02:00,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 17:02:00,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891821882] [2021-12-18 17:02:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 17:02:00,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 17:02:00,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:02:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 17:02:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 17:02:00,692 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), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 17:02:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:02:00,715 INFO L93 Difference]: Finished difference Result 631 states and 839 transitions. [2021-12-18 17:02:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 17:02:00,715 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), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-12-18 17:02:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:02:00,717 INFO L225 Difference]: With dead ends: 631 [2021-12-18 17:02:00,717 INFO L226 Difference]: Without dead ends: 341 [2021-12-18 17:02:00,718 INFO L932 BasicCegarLoop]: 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 [2021-12-18 17:02:00,718 INFO L933 BasicCegarLoop]: 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 [2021-12-18 17:02:00,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 17:02:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-18 17:02:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-12-18 17:02:00,726 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) [2021-12-18 17:02:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 447 transitions. [2021-12-18 17:02:00,728 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 447 transitions. Word has length 76 [2021-12-18 17:02:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:02:00,728 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 447 transitions. [2021-12-18 17:02:00,728 INFO L471 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), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 17:02:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 447 transitions. [2021-12-18 17:02:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 17:02:00,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:02:00,729 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:02:00,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 17:02:00,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:00,951 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:02:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:02:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2021-12-18 17:02:00,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:02:00,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603900344] [2021-12-18 17:02:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:02:00,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:02:00,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:02:00,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452269029] [2021-12-18 17:02:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:02:00,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:02:00,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:02:00,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 17:02:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 17:02:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 17:02:01,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:02:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 17:02:01,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 17:02:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 17:02:01,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:02:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603900344] [2021-12-18 17:02:01,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:02:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452269029] [2021-12-18 17:02:01,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452269029] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 17:02:01,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 17:02:01,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 17:02:01,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445052237] [2021-12-18 17:02:01,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 17:02:01,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 17:02:01,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:02:01,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 17:02:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 17:02:01,778 INFO L87 Difference]: Start difference. First operand 341 states and 447 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2021-12-18 17:02:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:02:01,896 INFO L93 Difference]: Finished difference Result 645 states and 860 transitions. [2021-12-18 17:02:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 17:02:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 78 [2021-12-18 17:02:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:02:01,898 INFO L225 Difference]: With dead ends: 645 [2021-12-18 17:02:01,898 INFO L226 Difference]: Without dead ends: 352 [2021-12-18 17:02:01,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-18 17:02:01,899 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 17 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 17:02:01,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 892 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 17:02:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-18 17:02:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2021-12-18 17:02:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2981366459627328) internal successors, (418), 339 states have internal predecessors, (418), 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) [2021-12-18 17:02:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 461 transitions. [2021-12-18 17:02:01,908 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 461 transitions. Word has length 78 [2021-12-18 17:02:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:02:01,908 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 461 transitions. [2021-12-18 17:02:01,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2021-12-18 17:02:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 461 transitions. [2021-12-18 17:02:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-18 17:02:01,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:02:01,909 INFO L514 BasicCegarLoop]: 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] [2021-12-18 17:02:01,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-18 17:02:02,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:02,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:02:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:02:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1737208967, now seen corresponding path program 2 times [2021-12-18 17:02:02,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:02:02,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21188834] [2021-12-18 17:02:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:02:02,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:02:02,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:02:02,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132504616] [2021-12-18 17:02:02,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 17:02:02,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:02:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:02:02,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:02:02,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 17:03:33,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 17:03:33,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 17:03:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 17:03:33,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 17:03:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 17:03:33,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 17:03:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-18 17:03:33,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 17:03:33,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21188834] [2021-12-18 17:03:33,949 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 17:03:33,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132504616] [2021-12-18 17:03:33,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132504616] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 17:03:33,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 17:03:33,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-12-18 17:03:33,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152149304] [2021-12-18 17:03:33,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 17:03:33,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 17:03:33,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 17:03:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 17:03:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-18 17:03:33,951 INFO L87 Difference]: Start difference. First operand 350 states and 461 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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) [2021-12-18 17:03:34,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 17:03:34,264 INFO L93 Difference]: Finished difference Result 704 states and 937 transitions. [2021-12-18 17:03:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 17:03:34,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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 82 [2021-12-18 17:03:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 17:03:34,267 INFO L225 Difference]: With dead ends: 704 [2021-12-18 17:03:34,267 INFO L226 Difference]: Without dead ends: 359 [2021-12-18 17:03:34,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-12-18 17:03:34,268 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 256 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 17:03:34,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2660 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 17:03:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-18 17:03:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 350. [2021-12-18 17:03:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2981366459627328) internal successors, (418), 339 states have internal predecessors, (418), 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) [2021-12-18 17:03:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 461 transitions. [2021-12-18 17:03:34,277 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 461 transitions. Word has length 82 [2021-12-18 17:03:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 17:03:34,278 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 461 transitions. [2021-12-18 17:03:34,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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) [2021-12-18 17:03:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 461 transitions. [2021-12-18 17:03:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-18 17:03:34,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 17:03:34,279 INFO L514 BasicCegarLoop]: trace histogram [12, 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] [2021-12-18 17:03:34,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 17:03:34,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:03:34,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 17:03:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 17:03:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -184704007, now seen corresponding path program 3 times [2021-12-18 17:03:34,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 17:03:34,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069043890] [2021-12-18 17:03:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 17:03:34,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 17:03:34,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 17:03:34,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671999552] [2021-12-18 17:03:34,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 17:03:34,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 17:03:34,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 17:03:34,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 17:03:34,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15