./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.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_SAX_test9-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:52:36,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:52:36,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:52:36,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:52:36,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:52:36,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:52:36,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:52:36,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:52:36,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:52:36,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:52:36,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:52:36,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:52:36,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:52:36,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:52:36,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:52:36,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:52:36,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:52:36,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:52:36,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:52:36,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:52:36,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:52:36,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:52:36,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:52:36,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:52:36,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:52:36,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:52:36,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:52:36,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:52:36,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:52:36,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:52:36,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:52:36,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:52:36,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:52:36,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:52:36,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:52:36,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:52:36,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:52:36,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:52:36,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:52:36,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:52:36,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:52:36,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 13:52:36,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:52:36,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:52:36,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:52:36,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:52:36,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:52:36,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:52:36,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:52:36,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:52:36,192 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:52:36,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:52:36,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:52:36,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:52:36,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:52:36,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:52:36,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:52:36,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:52:36,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:52:36,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:52:36,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:52:36,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:52:36,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:52:36,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:52:36,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:52:36,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 [2021-12-15 13:52:36,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:52:36,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:52:36,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:52:36,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:52:36,386 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:52:36,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-12-15 13:52:36,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b906f89d6/a11c529992604f509163766c9bf6db78/FLAGd21b3368d [2021-12-15 13:52:36,941 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:52:36,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-12-15 13:52:36,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b906f89d6/a11c529992604f509163766c9bf6db78/FLAGd21b3368d [2021-12-15 13:52:37,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b906f89d6/a11c529992604f509163766c9bf6db78 [2021-12-15 13:52:37,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:52:37,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:52:37,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:52:37,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:52:37,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:52:37,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:52:37" (1/1) ... [2021-12-15 13:52:37,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4f9b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:37, skipping insertion in model container [2021-12-15 13:52:37,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:52:37" (1/1) ... [2021-12-15 13:52:37,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:52:37,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:52:37,769 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_SAX_test9-1.i[33021,33034] [2021-12-15 13:52:37,939 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_SAX_test9-1.i[84583,84596] [2021-12-15 13:52:37,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:52:37,948 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:52:37,963 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_SAX_test9-1.i[33021,33034] [2021-12-15 13:52:38,065 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_SAX_test9-1.i[84583,84596] [2021-12-15 13:52:38,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:52:38,096 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:52:38,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38 WrapperNode [2021-12-15 13:52:38,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:52:38,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:52:38,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:52:38,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:52:38,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,218 INFO L137 Inliner]: procedures = 177, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2864 [2021-12-15 13:52:38,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:52:38,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:52:38,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:52:38,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:52:38,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:52:38,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:52:38,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:52:38,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:52:38,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (1/1) ... [2021-12-15 13:52:38,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:52:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:38,368 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 13:52:38,370 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 13:52:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:52:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:52:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:52:38,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:52:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:52:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:52:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:52:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:52:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:52:38,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:52:38,555 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:52:38,556 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:52:39,822 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:52:39,830 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:52:39,831 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-12-15 13:52:39,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:52:39 BoogieIcfgContainer [2021-12-15 13:52:39,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:52:39,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:52:39,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:52:39,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:52:39,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:52:37" (1/3) ... [2021-12-15 13:52:39,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3ee5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:52:39, skipping insertion in model container [2021-12-15 13:52:39,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:38" (2/3) ... [2021-12-15 13:52:39,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3ee5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:52:39, skipping insertion in model container [2021-12-15 13:52:39,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:52:39" (3/3) ... [2021-12-15 13:52:39,839 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-1.i [2021-12-15 13:52:39,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:52:39,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:52:39,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:52:39,879 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 13:52:39,879 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:52:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:52:39,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:39,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:52:39,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -858764483, now seen corresponding path program 1 times [2021-12-15 13:52:39,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:39,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463318692] [2021-12-15 13:52:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:39,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:40,087 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 13:52:40,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:40,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463318692] [2021-12-15 13:52:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463318692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:40,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:52:40,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623133311] [2021-12-15 13:52:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:40,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:52:40,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:52:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:52:40,127 INFO L87 Difference]: Start difference. First operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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 13:52:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:40,298 INFO L93 Difference]: Finished difference Result 2332 states and 5044 transitions. [2021-12-15 13:52:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:52:40,300 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 13:52:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:40,322 INFO L225 Difference]: With dead ends: 2332 [2021-12-15 13:52:40,322 INFO L226 Difference]: Without dead ends: 1163 [2021-12-15 13:52:40,331 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 13:52:40,333 INFO L933 BasicCegarLoop]: 2213 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, 2213 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 13:52:40,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:52:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-12-15 13:52:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2021-12-15 13:52:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.833841463414634) internal successors, (1203), 1157 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2209 transitions. [2021-12-15 13:52:40,587 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2209 transitions. Word has length 9 [2021-12-15 13:52:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:40,587 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2209 transitions. [2021-12-15 13:52:40,587 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 13:52:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2209 transitions. [2021-12-15 13:52:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:52:40,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:40,589 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 13:52:40,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 13:52:40,590 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -293931519, now seen corresponding path program 1 times [2021-12-15 13:52:40,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312550089] [2021-12-15 13:52:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:40,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:40,638 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 13:52:40,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:40,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312550089] [2021-12-15 13:52:40,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312550089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:40,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:40,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:52:40,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442317353] [2021-12-15 13:52:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:40,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:52:40,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:52:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:52:40,650 INFO L87 Difference]: Start difference. First operand 1163 states and 2209 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 13:52:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:41,458 INFO L93 Difference]: Finished difference Result 3333 states and 6429 transitions. [2021-12-15 13:52:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:52:41,459 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 13:52:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:41,470 INFO L225 Difference]: With dead ends: 3333 [2021-12-15 13:52:41,471 INFO L226 Difference]: Without dead ends: 2264 [2021-12-15 13:52:41,475 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 13:52:41,476 INFO L933 BasicCegarLoop]: 2673 mSDtfsCounter, 1128 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:41,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 6988 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 13:52:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-12-15 13:52:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1165. [2021-12-15 13:52:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 658 states have (on average 1.831306990881459) internal successors, (1205), 1159 states have internal predecessors, (1205), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 2211 transitions. [2021-12-15 13:52:41,698 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 2211 transitions. Word has length 44 [2021-12-15 13:52:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:41,698 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 2211 transitions. [2021-12-15 13:52:41,699 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 13:52:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 2211 transitions. [2021-12-15 13:52:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 13:52:41,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:41,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:41,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 13:52:41,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:41,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1509497837, now seen corresponding path program 1 times [2021-12-15 13:52:41,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:41,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918813936] [2021-12-15 13:52:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:41,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:41,765 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:52:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386647430] [2021-12-15 13:52:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:41,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:41,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:41,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:52:41,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 13:52:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:42,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:52:42,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:52:42,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:42,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:42,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918813936] [2021-12-15 13:52:42,352 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:52:42,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386647430] [2021-12-15 13:52:42,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386647430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:42,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:42,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:52:42,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696812001] [2021-12-15 13:52:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:42,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:52:42,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:52:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:42,354 INFO L87 Difference]: Start difference. First operand 1165 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:52:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:42,452 INFO L93 Difference]: Finished difference Result 2347 states and 4449 transitions. [2021-12-15 13:52:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:52:42,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-12-15 13:52:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:42,457 INFO L225 Difference]: With dead ends: 2347 [2021-12-15 13:52:42,458 INFO L226 Difference]: Without dead ends: 1186 [2021-12-15 13:52:42,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:42,462 INFO L933 BasicCegarLoop]: 2189 mSDtfsCounter, 9 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:42,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4363 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:52:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-12-15 13:52:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1185. [2021-12-15 13:52:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 678 states have (on average 1.8067846607669618) internal successors, (1225), 1179 states have internal predecessors, (1225), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 2231 transitions. [2021-12-15 13:52:42,577 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 2231 transitions. Word has length 96 [2021-12-15 13:52:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:42,577 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 2231 transitions. [2021-12-15 13:52:42,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:52:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 2231 transitions. [2021-12-15 13:52:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 13:52:42,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:42,583 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:42,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:52:42,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:42,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1482432235, now seen corresponding path program 1 times [2021-12-15 13:52:42,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:42,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127208287] [2021-12-15 13:52:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:42,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:42,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:52:42,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612719100] [2021-12-15 13:52:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:42,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:42,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:52:42,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 13:52:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:43,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:52:43,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 13:52:43,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:43,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:43,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127208287] [2021-12-15 13:52:43,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:52:43,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612719100] [2021-12-15 13:52:43,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612719100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:43,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:43,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:52:43,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975312543] [2021-12-15 13:52:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:43,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:52:43,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:52:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:43,482 INFO L87 Difference]: Start difference. First operand 1185 states and 2231 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 13:52:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:43,568 INFO L93 Difference]: Finished difference Result 2274 states and 4348 transitions. [2021-12-15 13:52:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:52:43,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-12-15 13:52:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:43,574 INFO L225 Difference]: With dead ends: 2274 [2021-12-15 13:52:43,574 INFO L226 Difference]: Without dead ends: 1206 [2021-12-15 13:52:43,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:43,579 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 8 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:43,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4365 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:52:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-12-15 13:52:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1205. [2021-12-15 13:52:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 698 states have (on average 1.7836676217765044) internal successors, (1245), 1199 states have internal predecessors, (1245), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 2251 transitions. [2021-12-15 13:52:43,706 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 2251 transitions. Word has length 96 [2021-12-15 13:52:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:43,706 INFO L470 AbstractCegarLoop]: Abstraction has 1205 states and 2251 transitions. [2021-12-15 13:52:43,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 13:52:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 2251 transitions. [2021-12-15 13:52:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 13:52:43,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:43,708 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:43,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:52:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-15 13:52:43,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1801417811, now seen corresponding path program 1 times [2021-12-15 13:52:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42425973] [2021-12-15 13:52:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:43,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:43,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:52:44,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998948286] [2021-12-15 13:52:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:44,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:44,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:44,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:52:44,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 13:52:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:44,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:52:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:52:44,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:44,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:44,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42425973] [2021-12-15 13:52:44,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:52:44,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998948286] [2021-12-15 13:52:44,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998948286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:44,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:44,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:52:44,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374693834] [2021-12-15 13:52:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:44,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:52:44,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:52:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:52:44,690 INFO L87 Difference]: Start difference. First operand 1205 states and 2251 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:52:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:44,788 INFO L93 Difference]: Finished difference Result 2398 states and 4490 transitions. [2021-12-15 13:52:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:52:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-12-15 13:52:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:44,793 INFO L225 Difference]: With dead ends: 2398 [2021-12-15 13:52:44,794 INFO L226 Difference]: Without dead ends: 1197 [2021-12-15 13:52:44,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 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 13:52:44,799 INFO L933 BasicCegarLoop]: 2189 mSDtfsCounter, 1182 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:44,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 4886 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:52:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-12-15 13:52:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1191. [2021-12-15 13:52:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 684 states have (on average 1.7894736842105263) internal successors, (1224), 1185 states have internal predecessors, (1224), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2230 transitions. [2021-12-15 13:52:44,923 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2230 transitions. Word has length 96 [2021-12-15 13:52:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:44,923 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2230 transitions. [2021-12-15 13:52:44,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 13:52:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2230 transitions. [2021-12-15 13:52:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 13:52:44,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:44,924 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:44,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:52:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:45,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 432450363, now seen corresponding path program 1 times [2021-12-15 13:52:45,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:45,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130548702] [2021-12-15 13:52:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:45,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:52:45,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078095633] [2021-12-15 13:52:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:45,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:45,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:45,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:52:45,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 13:52:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:45,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 13:52:45,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 13:52:45,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:45,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:45,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130548702] [2021-12-15 13:52:45,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:52:45,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078095633] [2021-12-15 13:52:45,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078095633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:45,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:45,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:52:45,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107134026] [2021-12-15 13:52:45,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:45,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:52:45,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:52:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:52:45,921 INFO L87 Difference]: Start difference. First operand 1191 states and 2230 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 13:52:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:46,014 INFO L93 Difference]: Finished difference Result 2271 states and 4328 transitions. [2021-12-15 13:52:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:52:46,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 96 [2021-12-15 13:52:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:46,019 INFO L225 Difference]: With dead ends: 2271 [2021-12-15 13:52:46,020 INFO L226 Difference]: Without dead ends: 1183 [2021-12-15 13:52:46,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:52:46,024 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 1076 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:46,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 4973 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:52:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-12-15 13:52:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1177. [2021-12-15 13:52:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 670 states have (on average 1.7955223880597015) internal successors, (1203), 1171 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 2209 transitions. [2021-12-15 13:52:46,187 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 2209 transitions. Word has length 96 [2021-12-15 13:52:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:46,187 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 2209 transitions. [2021-12-15 13:52:46,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 13:52:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 2209 transitions. [2021-12-15 13:52:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 13:52:46,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:46,191 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:46,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 13:52:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:46,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash -725158097, now seen corresponding path program 1 times [2021-12-15 13:52:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:46,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298213129] [2021-12-15 13:52:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:46,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:46,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:52:46,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654579023] [2021-12-15 13:52:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:46,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:46,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:46,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:52:46,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 13:52:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:47,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 13:52:47,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:52:47,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:47,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:52:47,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298213129] [2021-12-15 13:52:47,292 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:52:47,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654579023] [2021-12-15 13:52:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654579023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:47,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:47,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:52:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168749784] [2021-12-15 13:52:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:47,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:52:47,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:52:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:52:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:47,294 INFO L87 Difference]: Start difference. First operand 1177 states and 2209 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:52:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:47,431 INFO L93 Difference]: Finished difference Result 3446 states and 6522 transitions. [2021-12-15 13:52:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:52:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-12-15 13:52:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:47,441 INFO L225 Difference]: With dead ends: 3446 [2021-12-15 13:52:47,441 INFO L226 Difference]: Without dead ends: 2273 [2021-12-15 13:52:47,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:52:47,445 INFO L933 BasicCegarLoop]: 2736 mSDtfsCounter, 1065 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:47,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 4911 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:52:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-12-15 13:52:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2271. [2021-12-15 13:52:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1264 states have (on average 1.8259493670886076) internal successors, (2308), 2265 states have internal predecessors, (2308), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-12-15 13:52:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 4314 transitions. [2021-12-15 13:52:47,684 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 4314 transitions. Word has length 96 [2021-12-15 13:52:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:47,684 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 4314 transitions. [2021-12-15 13:52:47,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:52:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 4314 transitions. [2021-12-15 13:52:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-15 13:52:47,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:47,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:47,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 13:52:47,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:52:47,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash 372571869, now seen corresponding path program 1 times [2021-12-15 13:52:47,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:52:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771734721] [2021-12-15 13:52:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:47,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:52:47,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 13:52:47,918 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 13:52:47,921 INFO L158 Benchmark]: Toolchain (without parser) took 10510.55ms. Allocated memory was 109.1MB in the beginning and 432.0MB in the end (delta: 323.0MB). Free memory was 68.9MB in the beginning and 298.9MB in the end (delta: -230.0MB). Peak memory consumption was 94.3MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,921 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory was 79.8MB in the beginning and 79.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:52:47,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.52ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 68.6MB in the beginning and 96.4MB in the end (delta: -27.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.87ms. Allocated memory is still 134.2MB. Free memory was 96.4MB in the beginning and 82.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,922 INFO L158 Benchmark]: Boogie Preprocessor took 121.78ms. Allocated memory is still 134.2MB. Free memory was 82.4MB in the beginning and 69.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,922 INFO L158 Benchmark]: RCFGBuilder took 1491.43ms. Allocated memory was 134.2MB in the beginning and 186.6MB in the end (delta: 52.4MB). Free memory was 69.8MB in the beginning and 128.4MB in the end (delta: -58.5MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,922 INFO L158 Benchmark]: TraceAbstraction took 8086.20ms. Allocated memory was 186.6MB in the beginning and 432.0MB in the end (delta: 245.4MB). Free memory was 128.4MB in the beginning and 298.9MB in the end (delta: -170.5MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2021-12-15 13:52:47,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory was 79.8MB in the beginning and 79.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.52ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 68.6MB in the beginning and 96.4MB in the end (delta: -27.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.87ms. Allocated memory is still 134.2MB. Free memory was 96.4MB in the beginning and 82.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.78ms. Allocated memory is still 134.2MB. Free memory was 82.4MB in the beginning and 69.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1491.43ms. Allocated memory was 134.2MB in the beginning and 186.6MB in the end (delta: 52.4MB). Free memory was 69.8MB in the beginning and 128.4MB in the end (delta: -58.5MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8086.20ms. Allocated memory was 186.6MB in the beginning and 432.0MB in the end (delta: 245.4MB). Free memory was 128.4MB in the beginning and 298.9MB in the end (delta: -170.5MB). Peak memory consumption was 74.9MB. 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 13:52:47,948 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 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_SAX_test9-1.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 e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:52:49,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:52:49,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:52:49,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:52:49,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:52:49,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:52:49,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:52:49,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:52:49,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:52:49,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:52:49,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:52:49,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:52:49,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:52:49,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:52:49,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:52:49,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:52:49,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:52:49,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:52:49,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:52:49,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:52:49,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:52:49,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:52:49,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:52:49,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:52:49,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:52:49,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:52:49,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:52:49,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:52:49,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:52:49,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:52:49,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:52:49,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:52:49,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:52:49,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:52:49,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:52:49,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:52:49,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:52:49,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:52:49,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:52:49,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:52:49,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:52:49,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 13:52:49,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:52:49,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:52:49,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:52:49,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:52:49,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:52:49,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:52:49,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:52:49,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:52:49,676 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:52:49,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:52:49,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:52:49,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:52:49,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:52:49,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:52:49,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:52:49,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:52:49,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:52:49,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:52:49,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:52:49,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:52:49,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:52:49,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:52:49,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:52:49,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:52:49,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:52:49,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:52:49,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 [2021-12-15 13:52:49,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:52:49,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:52:49,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:52:49,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:52:49,954 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:52:49,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-12-15 13:52:50,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb8c0c3a/12d37752c08b4ac78a48443089aae0b1/FLAGf2b4d8a2e [2021-12-15 13:52:50,501 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:52:50,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-12-15 13:52:50,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb8c0c3a/12d37752c08b4ac78a48443089aae0b1/FLAGf2b4d8a2e [2021-12-15 13:52:51,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb8c0c3a/12d37752c08b4ac78a48443089aae0b1 [2021-12-15 13:52:51,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:52:51,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:52:51,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:52:51,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:52:51,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:52:51,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:51,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5515e6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51, skipping insertion in model container [2021-12-15 13:52:51,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:51,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:52:51,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:52:51,377 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_SAX_test9-1.i[33021,33034] [2021-12-15 13:52:51,567 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_SAX_test9-1.i[84583,84596] [2021-12-15 13:52:51,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:52:51,590 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:52:51,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:52:51,636 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_SAX_test9-1.i[33021,33034] [2021-12-15 13:52:51,721 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_SAX_test9-1.i[84583,84596] [2021-12-15 13:52:51,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:52:51,732 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:52:51,755 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_SAX_test9-1.i[33021,33034] [2021-12-15 13:52:51,818 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_SAX_test9-1.i[84583,84596] [2021-12-15 13:52:51,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:52:51,863 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:52:51,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51 WrapperNode [2021-12-15 13:52:51,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:52:51,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:52:51,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:52:51,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:52:51,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:51,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:51,986 INFO L137 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2864 [2021-12-15 13:52:51,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:52:51,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:52:51,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:52:51,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:52:51,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:51,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:52:52,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:52:52,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:52:52,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:52:52,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (1/1) ... [2021-12-15 13:52:52,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:52:52,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:52:52,209 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 13:52:52,225 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 13:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:52:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:52:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:52:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:52:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:52:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:52:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:52:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:52:52,474 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:52:52,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:52:58,180 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:52:58,190 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:52:58,190 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-12-15 13:52:58,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:52:58 BoogieIcfgContainer [2021-12-15 13:52:58,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:52:58,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:52:58,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:52:58,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:52:58,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:52:51" (1/3) ... [2021-12-15 13:52:58,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361e864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:52:58, skipping insertion in model container [2021-12-15 13:52:58,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:52:51" (2/3) ... [2021-12-15 13:52:58,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361e864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:52:58, skipping insertion in model container [2021-12-15 13:52:58,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:52:58" (3/3) ... [2021-12-15 13:52:58,197 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-1.i [2021-12-15 13:52:58,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:52:58,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:52:58,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:52:58,256 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 13:52:58,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:52:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:52:58,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:58,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:52:58,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash -858764483, now seen corresponding path program 1 times [2021-12-15 13:52:58,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:52:58,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003063204] [2021-12-15 13:52:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:58,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:52:58,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:52:58,309 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 13:52:58,310 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 13:52:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:58,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:52:58,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:58,473 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 13:52:58,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:58,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:52:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003063204] [2021-12-15 13:52:58,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003063204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:58,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:58,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:52:58,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761498517] [2021-12-15 13:52:58,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:58,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:52:58,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:52:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:52:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:52:58,515 INFO L87 Difference]: Start difference. First operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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 13:52:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:58,651 INFO L93 Difference]: Finished difference Result 2332 states and 5044 transitions. [2021-12-15 13:52:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:52:58,661 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 13:52:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:58,684 INFO L225 Difference]: With dead ends: 2332 [2021-12-15 13:52:58,685 INFO L226 Difference]: Without dead ends: 1163 [2021-12-15 13:52:58,693 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 13:52:58,696 INFO L933 BasicCegarLoop]: 2213 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, 2213 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 13:52:58,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:52:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-12-15 13:52:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2021-12-15 13:52:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.833841463414634) internal successors, (1203), 1157 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2209 transitions. [2021-12-15 13:52:58,963 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2209 transitions. Word has length 9 [2021-12-15 13:52:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:58,963 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2209 transitions. [2021-12-15 13:52:58,964 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 13:52:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2209 transitions. [2021-12-15 13:52:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:52:58,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:58,966 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 13:52:58,980 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 13:52:59,174 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 13:52:59,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:52:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:52:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash -293931519, now seen corresponding path program 1 times [2021-12-15 13:52:59,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:52:59,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31322908] [2021-12-15 13:52:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:52:59,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:52:59,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:52:59,179 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 13:52:59,181 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 13:52:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:52:59,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 13:52:59,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:52:59,511 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 13:52:59,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:52:59,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:52:59,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31322908] [2021-12-15 13:52:59,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31322908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:52:59,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:52:59,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:52:59,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769360795] [2021-12-15 13:52:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:52:59,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:52:59,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:52:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:52:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:52:59,515 INFO L87 Difference]: Start difference. First operand 1163 states and 2209 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:52:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:52:59,689 INFO L93 Difference]: Finished difference Result 2240 states and 4307 transitions. [2021-12-15 13:52:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:52:59,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:52:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:52:59,696 INFO L225 Difference]: With dead ends: 2240 [2021-12-15 13:52:59,696 INFO L226 Difference]: Without dead ends: 1172 [2021-12-15 13:52:59,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:52:59,701 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 1078 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:52:59,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 4988 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:52:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-12-15 13:52:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1166. [2021-12-15 13:52:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 659 states have (on average 1.817905918057663) internal successors, (1198), 1160 states have internal predecessors, (1198), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-12-15 13:52:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2204 transitions. [2021-12-15 13:52:59,840 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2204 transitions. Word has length 44 [2021-12-15 13:52:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:52:59,840 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2204 transitions. [2021-12-15 13:52:59,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:52:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2204 transitions. [2021-12-15 13:52:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:52:59,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:52:59,842 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 13:52:59,853 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 13:53:00,051 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 13:53:00,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1193374541, now seen corresponding path program 1 times [2021-12-15 13:53:00,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:00,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651400416] [2021-12-15 13:53:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:00,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:00,055 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 13:53:00,056 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 13:53:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:00,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 13:53:00,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:00,314 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 13:53:00,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:00,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:00,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651400416] [2021-12-15 13:53:00,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651400416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:00,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:00,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:53:00,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657023372] [2021-12-15 13:53:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:00,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:53:00,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:53:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:00,317 INFO L87 Difference]: Start difference. First operand 1166 states and 2204 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:53:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:00,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:00,395 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 49 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:00,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 402 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:00,413 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 13:53:00,596 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 13:53:00,596 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.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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 13:53:00,599 INFO L158 Benchmark]: Toolchain (without parser) took 9566.39ms. Allocated memory was 62.9MB in the beginning and 180.4MB in the end (delta: 117.4MB). Free memory was 44.0MB in the beginning and 58.4MB in the end (delta: -14.4MB). Peak memory consumption was 103.1MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,599 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:00,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 831.25ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 41.5MB in the end (delta: 2.4MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.03ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 39.2MB in the end (delta: 2.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,600 INFO L158 Benchmark]: Boogie Preprocessor took 131.93ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 39.2MB in the beginning and 64.5MB in the end (delta: -25.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,601 INFO L158 Benchmark]: RCFGBuilder took 6064.21ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 64.5MB in the beginning and 82.7MB in the end (delta: -18.1MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,601 INFO L158 Benchmark]: TraceAbstraction took 2404.73ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 82.7MB in the beginning and 58.4MB in the end (delta: 24.3MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2021-12-15 13:53:00,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 831.25ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 41.5MB in the end (delta: 2.4MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.03ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 39.2MB in the end (delta: 2.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.93ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 39.2MB in the beginning and 64.5MB in the end (delta: -25.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6064.21ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 64.5MB in the beginning and 82.7MB in the end (delta: -18.1MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2404.73ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 82.7MB in the beginning and 58.4MB in the end (delta: 24.3MB). Peak memory consumption was 56.8MB. 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 13:53:00,636 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable