./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_SFH_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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:53:13,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:53:13,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:53:13,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:53:13,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:53:13,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:53:13,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:53:13,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:53:13,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:53:13,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:53:13,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:53:13,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:53:13,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:53:13,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:53:13,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:53:13,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:53:13,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:53:13,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:53:13,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:53:13,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:53:13,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:53:13,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:53:13,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:53:13,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:53:13,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:53:13,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:53:13,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:53:13,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:53:13,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:53:13,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:53:13,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:53:13,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:53:13,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:53:13,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:53:13,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:53:13,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:53:13,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:53:13,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:53:13,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:53:13,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:53:13,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:53:13,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 13:53:13,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:53:13,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:53:13,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:53:13,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:53:13,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:53:13,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:53:13,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:53:13,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:53:13,874 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:53:13,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:53:13,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:53:13,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:53:13,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:53:13,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:53:13,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:53:13,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:53:13,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:53:13,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:53:13,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:13,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:53:13,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:53:13,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:53:13,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:53:13,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:53:13,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:53:13,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:53:13,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:53:13,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:53:13,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-12-15 13:53:14,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:53:14,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:53:14,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:53:14,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:53:14,109 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:53:14,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-15 13:53:14,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c417fda8c/0860e522285e473290ba3eec79fb58c6/FLAG4cbe9a067 [2021-12-15 13:53:14,563 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:53:14,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-15 13:53:14,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c417fda8c/0860e522285e473290ba3eec79fb58c6/FLAG4cbe9a067 [2021-12-15 13:53:14,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c417fda8c/0860e522285e473290ba3eec79fb58c6 [2021-12-15 13:53:14,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:53:14,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:53:14,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:14,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:53:14,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:53:14,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:14" (1/1) ... [2021-12-15 13:53:14,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149434cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:14, skipping insertion in model container [2021-12-15 13:53:14,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:14" (1/1) ... [2021-12-15 13:53:14,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:53:14,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:15,216 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_SFH_test8-2.i[33021,33034] [2021-12-15 13:53:15,309 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_SFH_test8-2.i[45234,45247] [2021-12-15 13:53:15,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:15,328 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:53:15,358 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_SFH_test8-2.i[33021,33034] [2021-12-15 13:53:15,387 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_SFH_test8-2.i[45234,45247] [2021-12-15 13:53:15,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:15,414 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:53:15,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15 WrapperNode [2021-12-15 13:53:15,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:15,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:15,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:53:15,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:53:15,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,509 INFO L137 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-12-15 13:53:15,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:15,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:53:15,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:53:15,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:53:15,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:53:15,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:53:15,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:53:15,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:53:15,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (1/1) ... [2021-12-15 13:53:15,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:15,632 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) [2021-12-15 13:53:15,635 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 [2021-12-15 13:53:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:53:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:53:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:53:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:53:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:53:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:53:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-15 13:53:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:53:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:53:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:53:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:53:15,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:53:15,845 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:53:15,846 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:53:16,570 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:53:16,577 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:53:16,577 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-12-15 13:53:16,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:16 BoogieIcfgContainer [2021-12-15 13:53:16,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:53:16,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:53:16,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:53:16,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:53:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:53:14" (1/3) ... [2021-12-15 13:53:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552ea2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:16, skipping insertion in model container [2021-12-15 13:53:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:15" (2/3) ... [2021-12-15 13:53:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552ea2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:16, skipping insertion in model container [2021-12-15 13:53:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:16" (3/3) ... [2021-12-15 13:53:16,584 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2021-12-15 13:53:16,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:53:16,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:53:16,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:53:16,626 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 [2021-12-15 13:53:16,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:53:16,644 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) [2021-12-15 13:53:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:53:16,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:16,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:16,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:16,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-15 13:53:16,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:16,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940871491] [2021-12-15 13:53:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:16,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:16,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:16,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940871491] [2021-12-15 13:53:16,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940871491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:16,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:16,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:53:16,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441978887] [2021-12-15 13:53:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:16,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:53:16,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:53:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:16,817 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) [2021-12-15 13:53:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:16,884 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-12-15 13:53:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:53:16,886 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 [2021-12-15 13:53:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:16,898 INFO L225 Difference]: With dead ends: 508 [2021-12-15 13:53:16,898 INFO L226 Difference]: Without dead ends: 222 [2021-12-15 13:53:16,905 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 [2021-12-15 13:53:16,909 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 [2021-12-15 13:53:16,910 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] [2021-12-15 13:53:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-15 13:53:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-15 13:53:16,964 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) [2021-12-15 13:53:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-15 13:53:16,969 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-15 13:53:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:16,969 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-15 13:53:16,970 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) [2021-12-15 13:53:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-15 13:53:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:53:16,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:16,973 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] [2021-12-15 13:53:16,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 13:53:16,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-15 13:53:16,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542492245] [2021-12-15 13:53:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:16,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:17,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:17,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542492245] [2021-12-15 13:53:17,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542492245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:17,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:17,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:53:17,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339503268] [2021-12-15 13:53:17,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:17,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:53:17,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:53:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:53:17,095 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) [2021-12-15 13:53:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:17,361 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2021-12-15 13:53:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:17,363 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 [2021-12-15 13:53:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:17,365 INFO L225 Difference]: With dead ends: 463 [2021-12-15 13:53:17,365 INFO L226 Difference]: Without dead ends: 338 [2021-12-15 13:53:17,365 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 [2021-12-15 13:53:17,366 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 [2021-12-15 13:53:17,367 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] [2021-12-15 13:53:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-15 13:53:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2021-12-15 13:53:17,377 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) [2021-12-15 13:53:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2021-12-15 13:53:17,378 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2021-12-15 13:53:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:17,378 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2021-12-15 13:53:17,379 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) [2021-12-15 13:53:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2021-12-15 13:53:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-15 13:53:17,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:17,380 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] [2021-12-15 13:53:17,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 13:53:17,381 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-12-15 13:53:17,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:17,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563216603] [2021-12-15 13:53:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:17,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:17,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 13:53:17,439 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:53:17,443 INFO L158 Benchmark]: Toolchain (without parser) took 2545.12ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 78.6MB in the beginning and 104.7MB in the end (delta: -26.1MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,443 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:17,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.92ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 61.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.75ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 103.9MB in the end (delta: -42.9MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,445 INFO L158 Benchmark]: Boogie Preprocessor took 79.19ms. Allocated memory is still 132.1MB. Free memory was 103.9MB in the beginning and 96.3MB in the end (delta: 7.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,445 INFO L158 Benchmark]: RCFGBuilder took 988.75ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 79.5MB in the end (delta: 16.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,445 INFO L158 Benchmark]: TraceAbstraction took 863.01ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 79.5MB in the beginning and 104.7MB in the end (delta: -25.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-15 13:53:17,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.92ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 61.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.75ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 103.9MB in the end (delta: -42.9MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.19ms. Allocated memory is still 132.1MB. Free memory was 103.9MB in the beginning and 96.3MB in the end (delta: 7.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * RCFGBuilder took 988.75ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 79.5MB in the end (delta: 16.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 863.01ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 79.5MB in the beginning and 104.7MB in the end (delta: -25.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:53:17,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_SFH_test8-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:53:19,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:53:19,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:53:19,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:53:19,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:53:19,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:53:19,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:53:19,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:53:19,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:53:19,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:53:19,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:53:19,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:53:19,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:53:19,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:53:19,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:53:19,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:53:19,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:53:19,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:53:19,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:53:19,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:53:19,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:53:19,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:53:19,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:53:19,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:53:19,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:53:19,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:53:19,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:53:19,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:53:19,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:53:19,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:53:19,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:53:19,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:53:19,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:53:19,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:53:19,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:53:19,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:53:19,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:53:19,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:53:19,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:53:19,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:53:19,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:53:19,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 13:53:19,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:53:19,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:53:19,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:53:19,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:53:19,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:53:19,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:53:19,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:53:19,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:53:19,166 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:53:19,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:53:19,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:53:19,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:53:19,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:53:19,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:53:19,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:53:19,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:53:19,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:53:19,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:53:19,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:53:19,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:53:19,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:53:19,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:19,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:53:19,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:53:19,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:53:19,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:53:19,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:53:19,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:53:19,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:53:19,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:53:19,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:53:19,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:53:19,172 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-12-15 13:53:19,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:53:19,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:53:19,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:53:19,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:53:19,458 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:53:19,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-15 13:53:19,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5629ae79b/eeabfe6f416d4fa5909dbba0cb39916e/FLAG3ee67cf12 [2021-12-15 13:53:19,954 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:53:19,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-15 13:53:19,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5629ae79b/eeabfe6f416d4fa5909dbba0cb39916e/FLAG3ee67cf12 [2021-12-15 13:53:19,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5629ae79b/eeabfe6f416d4fa5909dbba0cb39916e [2021-12-15 13:53:19,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:53:19,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:53:19,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:19,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:53:19,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:53:19,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:19" (1/1) ... [2021-12-15 13:53:19,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8ea58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:19, skipping insertion in model container [2021-12-15 13:53:19,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:19" (1/1) ... [2021-12-15 13:53:19,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:53:20,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:20,341 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_SFH_test8-2.i[33021,33034] [2021-12-15 13:53:20,437 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_SFH_test8-2.i[45234,45247] [2021-12-15 13:53:20,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:20,458 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:53:20,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:20,479 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_SFH_test8-2.i[33021,33034] [2021-12-15 13:53:20,525 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_SFH_test8-2.i[45234,45247] [2021-12-15 13:53:20,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:20,543 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:53:20,561 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_SFH_test8-2.i[33021,33034] [2021-12-15 13:53:20,601 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_SFH_test8-2.i[45234,45247] [2021-12-15 13:53:20,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:20,647 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:53:20,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20 WrapperNode [2021-12-15 13:53:20,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:20,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:20,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:53:20,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:53:20,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,742 INFO L137 Inliner]: procedures = 180, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-12-15 13:53:20,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:20,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:53:20,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:53:20,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:53:20,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:53:20,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:53:20,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:53:20,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:53:20,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:20,864 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) [2021-12-15 13:53:20,884 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 [2021-12-15 13:53:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:53:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:53:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:53:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:53:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-15 13:53:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:53:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:53:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:53:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:53:21,101 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:53:21,102 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:53:25,687 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:53:25,692 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:53:25,692 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-12-15 13:53:25,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:25 BoogieIcfgContainer [2021-12-15 13:53:25,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:53:25,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:53:25,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:53:25,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:53:25,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:53:19" (1/3) ... [2021-12-15 13:53:25,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3792b2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:25, skipping insertion in model container [2021-12-15 13:53:25,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (2/3) ... [2021-12-15 13:53:25,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3792b2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:25, skipping insertion in model container [2021-12-15 13:53:25,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:25" (3/3) ... [2021-12-15 13:53:25,698 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2021-12-15 13:53:25,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:53:25,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:53:25,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:53:25,747 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 [2021-12-15 13:53:25,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:53:25,760 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) [2021-12-15 13:53:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:53:25,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:25,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:25,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-15 13:53:25,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:25,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140342127] [2021-12-15 13:53:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:25,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:25,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:25,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 13:53:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:25,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:53:25,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:25,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:25,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:25,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140342127] [2021-12-15 13:53:25,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140342127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:25,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:25,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:53:25,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851944043] [2021-12-15 13:53:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:25,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:53:25,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:53:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:26,002 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) [2021-12-15 13:53:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:26,039 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-12-15 13:53:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:53:26,041 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 [2021-12-15 13:53:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:26,047 INFO L225 Difference]: With dead ends: 508 [2021-12-15 13:53:26,048 INFO L226 Difference]: Without dead ends: 222 [2021-12-15 13:53:26,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:26,053 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 [2021-12-15 13:53:26,054 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] [2021-12-15 13:53:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-15 13:53:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-15 13:53:26,090 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) [2021-12-15 13:53:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-15 13:53:26,093 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-15 13:53:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:26,094 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-15 13:53:26,094 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) [2021-12-15 13:53:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-15 13:53:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:53:26,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:26,096 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] [2021-12-15 13:53:26,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:26,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:26,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-15 13:53:26,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:26,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766337237] [2021-12-15 13:53:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:26,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:26,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:26,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:26,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 13:53:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:26,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:26,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:26,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:26,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:26,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766337237] [2021-12-15 13:53:26,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766337237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:26,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:26,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:53:26,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041817470] [2021-12-15 13:53:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:26,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:53:26,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:53:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:53:26,577 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) [2021-12-15 13:53:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:26,701 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2021-12-15 13:53:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:26,702 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 [2021-12-15 13:53:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:26,704 INFO L225 Difference]: With dead ends: 355 [2021-12-15 13:53:26,706 INFO L226 Difference]: Without dead ends: 231 [2021-12-15 13:53:26,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:26,708 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 97 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:26,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 754 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-15 13:53:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-12-15 13:53:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 200 states have (on average 1.31) internal successors, (262), 216 states have internal predecessors, (262), 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) [2021-12-15 13:53:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 302 transitions. [2021-12-15 13:53:26,727 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 302 transitions. Word has length 44 [2021-12-15 13:53:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 302 transitions. [2021-12-15 13:53:26,728 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) [2021-12-15 13:53:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 302 transitions. [2021-12-15 13:53:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:53:26,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:26,729 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] [2021-12-15 13:53:26,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:26,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:26,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1417019415, now seen corresponding path program 1 times [2021-12-15 13:53:26,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22615856] [2021-12-15 13:53:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:26,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:26,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:26,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 13:53:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 13:53:27,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:27,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:53:27,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:53:27,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:53:27,180 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-15 13:53:27,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-15 13:53:27,230 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 13:53:27,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-12-15 13:53:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:27,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:27,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22615856] [2021-12-15 13:53:27,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22615856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:27,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:27,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:53:27,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130525093] [2021-12-15 13:53:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:27,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:53:27,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:27,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:53:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:53:27,312 INFO L87 Difference]: Start difference. First operand 225 states and 302 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) [2021-12-15 13:53:30,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 13:53:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:31,824 INFO L93 Difference]: Finished difference Result 472 states and 627 transitions. [2021-12-15 13:53:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:31,825 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 [2021-12-15 13:53:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:31,827 INFO L225 Difference]: With dead ends: 472 [2021-12-15 13:53:31,827 INFO L226 Difference]: Without dead ends: 344 [2021-12-15 13:53:31,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:31,829 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 132 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:31,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 765 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-12-15 13:53:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-15 13:53:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 227. [2021-12-15 13:53:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.306930693069307) internal successors, (264), 218 states have internal predecessors, (264), 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) [2021-12-15 13:53:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2021-12-15 13:53:31,846 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 44 [2021-12-15 13:53:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:31,846 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2021-12-15 13:53:31,846 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) [2021-12-15 13:53:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2021-12-15 13:53:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-15 13:53:31,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:31,848 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] [2021-12-15 13:53:31,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:32,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:32,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-12-15 13:53:32,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:32,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072043249] [2021-12-15 13:53:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:32,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:32,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:32,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 13:53:32,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:32,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:32,387 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:53:32,389 INFO L158 Benchmark]: Toolchain (without parser) took 12406.52ms. Allocated memory was 50.3MB in the beginning and 79.7MB in the end (delta: 29.4MB). Free memory was 25.3MB in the beginning and 32.7MB in the end (delta: -7.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-12-15 13:53:32,389 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:32,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.57ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.1MB in the beginning and 24.8MB in the end (delta: 309.6kB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-15 13:53:32,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.32ms. Allocated memory is still 65.0MB. Free memory was 24.8MB in the beginning and 40.6MB in the end (delta: -15.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 13:53:32,390 INFO L158 Benchmark]: Boogie Preprocessor took 85.18ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 31.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:53:32,391 INFO L158 Benchmark]: RCFGBuilder took 4864.37ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 31.2MB in the end (delta: 620.6kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2021-12-15 13:53:32,391 INFO L158 Benchmark]: TraceAbstraction took 6694.29ms. Allocated memory is still 79.7MB. Free memory was 30.7MB in the beginning and 32.7MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:32,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.57ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.1MB in the beginning and 24.8MB in the end (delta: 309.6kB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.32ms. Allocated memory is still 65.0MB. Free memory was 24.8MB in the beginning and 40.6MB in the end (delta: -15.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.18ms. Allocated memory is still 65.0MB. Free memory was 40.6MB in the beginning and 31.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4864.37ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 31.2MB in the end (delta: 620.6kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6694.29ms. Allocated memory is still 79.7MB. Free memory was 30.7MB in the beginning and 32.7MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:53:32,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable