./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.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 fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:55:25,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:55:25,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:55:26,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:55:26,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:55:26,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:55:26,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:55:26,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:55:26,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:55:26,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:55:26,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:55:26,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:55:26,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:55:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:55:26,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:55:26,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:55:26,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:55:26,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:55:26,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:55:26,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:55:26,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:55:26,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:55:26,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:55:26,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:55:26,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:55:26,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:55:26,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:55:26,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:55:26,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:55:26,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:55:26,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:55:26,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:55:26,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:55:26,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:55:26,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:55:26,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:55:26,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:55:26,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:55:26,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:55:26,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:55:26,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:55:26,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:55:26,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:55:26,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:55:26,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:55:26,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:55:26,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:55:26,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:55:26,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:55:26,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:55:26,169 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:55:26,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:55:26,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:55:26,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:55:26,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:55:26,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:26,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:55:26,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:55:26,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:55:26,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:55:26,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:55:26,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:55:26,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:55:26,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:55:26,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:55:26,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2021-12-15 23:55:26,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:55:26,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:55:26,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:55:26,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:55:26,409 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:55:26,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-12-15 23:55:26,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14789408c/7cc16b65695741cc8a6087527c004e9c/FLAG5fe5d432e [2021-12-15 23:55:26,864 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:55:26,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-12-15 23:55:26,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14789408c/7cc16b65695741cc8a6087527c004e9c/FLAG5fe5d432e [2021-12-15 23:55:26,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14789408c/7cc16b65695741cc8a6087527c004e9c [2021-12-15 23:55:26,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:55:26,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:55:26,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:26,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:55:26,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:55:26,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:26" (1/1) ... [2021-12-15 23:55:26,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f8eef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:26, skipping insertion in model container [2021-12-15 23:55:26,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:26" (1/1) ... [2021-12-15 23:55:26,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:55:26,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:55:27,198 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/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2021-12-15 23:55:27,205 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/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2021-12-15 23:55:27,206 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/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2021-12-15 23:55:27,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:27,229 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:55:27,285 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/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2021-12-15 23:55:27,286 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/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2021-12-15 23:55:27,286 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/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2021-12-15 23:55:27,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:27,311 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:55:27,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27 WrapperNode [2021-12-15 23:55:27,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:27,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:27,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:55:27,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:55:27,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,350 INFO L137 Inliner]: procedures = 139, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 128 [2021-12-15 23:55:27,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:27,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:55:27,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:55:27,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:55:27,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:55:27,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:55:27,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:55:27,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:55:27,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (1/1) ... [2021-12-15 23:55:27,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:27,399 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 23:55:27,407 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 23:55:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-12-15 23:55:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-12-15 23:55:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 23:55:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-15 23:55:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-12-15 23:55:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:55:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 23:55:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:55:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-12-15 23:55:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-12-15 23:55:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:55:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:55:27,522 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:55:27,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:55:27,686 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:55:27,691 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:55:27,691 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 23:55:27,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:27 BoogieIcfgContainer [2021-12-15 23:55:27,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:55:27,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:55:27,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:55:27,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:55:27,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:55:26" (1/3) ... [2021-12-15 23:55:27,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474fc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:27, skipping insertion in model container [2021-12-15 23:55:27,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:27" (2/3) ... [2021-12-15 23:55:27,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474fc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:27, skipping insertion in model container [2021-12-15 23:55:27,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:27" (3/3) ... [2021-12-15 23:55:27,713 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2021-12-15 23:55:27,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:55:27,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-15 23:55:27,752 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:55:27,758 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 23:55:27,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-15 23:55:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 23:55:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:55:27,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:27,786 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] [2021-12-15 23:55:27,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1577806477, now seen corresponding path program 1 times [2021-12-15 23:55:27,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453715286] [2021-12-15 23:55:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:27,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:27,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-15 23:55:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 23:55:28,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:28,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453715286] [2021-12-15 23:55:28,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453715286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:28,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:28,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 23:55:28,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750694919] [2021-12-15 23:55:28,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:28,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 23:55:28,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 23:55:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:55:28,054 INFO L87 Difference]: Start difference. First operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:28,119 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2021-12-15 23:55:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 23:55:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-15 23:55:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:28,128 INFO L225 Difference]: With dead ends: 131 [2021-12-15 23:55:28,129 INFO L226 Difference]: Without dead ends: 64 [2021-12-15 23:55:28,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 23:55:28,134 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:28,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 109 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-15 23:55:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-12-15 23:55:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 23:55:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2021-12-15 23:55:28,176 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 28 [2021-12-15 23:55:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:28,177 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2021-12-15 23:55:28,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2021-12-15 23:55:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:55:28,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:28,180 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] [2021-12-15 23:55:28,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:55:28,180 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash -109345869, now seen corresponding path program 1 times [2021-12-15 23:55:28,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:28,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869313568] [2021-12-15 23:55:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:28,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-15 23:55:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 23:55:28,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:28,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869313568] [2021-12-15 23:55:28,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869313568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:28,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:28,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:55:28,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249685006] [2021-12-15 23:55:28,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:28,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:55:28,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:55:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:55:28,337 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:28,414 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-15 23:55:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:55:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-15 23:55:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:28,415 INFO L225 Difference]: With dead ends: 70 [2021-12-15 23:55:28,415 INFO L226 Difference]: Without dead ends: 68 [2021-12-15 23:55:28,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:55:28,417 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 23 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:28,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 206 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:55:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-15 23:55:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-12-15 23:55:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-15 23:55:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-12-15 23:55:28,424 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 28 [2021-12-15 23:55:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:28,424 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-12-15 23:55:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-12-15 23:55:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:55:28,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:28,425 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] [2021-12-15 23:55:28,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:55:28,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1465257436, now seen corresponding path program 1 times [2021-12-15 23:55:28,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:28,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612662972] [2021-12-15 23:55:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:28,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-15 23:55:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 23:55:28,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:28,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612662972] [2021-12-15 23:55:28,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612662972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:28,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:28,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 23:55:28,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542300675] [2021-12-15 23:55:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:28,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 23:55:28,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 23:55:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:55:28,580 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:28,901 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2021-12-15 23:55:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 23:55:28,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-15 23:55:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:28,909 INFO L225 Difference]: With dead ends: 186 [2021-12-15 23:55:28,910 INFO L226 Difference]: Without dead ends: 129 [2021-12-15 23:55:28,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-15 23:55:28,913 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 120 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:28,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 258 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 23:55:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-15 23:55:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2021-12-15 23:55:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 77 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2021-12-15 23:55:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2021-12-15 23:55:28,927 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 28 [2021-12-15 23:55:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:28,928 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2021-12-15 23:55:28,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2021-12-15 23:55:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-15 23:55:28,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:28,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-15 23:55:28,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 23:55:28,930 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1566335676, now seen corresponding path program 1 times [2021-12-15 23:55:28,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995967437] [2021-12-15 23:55:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:28,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:55:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:55:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-15 23:55:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-15 23:55:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-15 23:55:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 23:55:29,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:29,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995967437] [2021-12-15 23:55:29,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995967437] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:29,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031756245] [2021-12-15 23:55:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:29,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:29,993 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 23:55:30,001 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 23:55:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 204 conjunts are in the unsatisfiable core [2021-12-15 23:55:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:30,498 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:30,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:30,719 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-15 23:55:30,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-15 23:55:30,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:30,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:31,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:32,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,597 INFO L354 Elim1Store]: treesize reduction 168, result has 22.9 percent of original size [2021-12-15 23:55:32,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 142 [2021-12-15 23:55:32,609 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:55:32,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 230 [2021-12-15 23:55:32,647 INFO L354 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2021-12-15 23:55:32,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 223 treesize of output 168 [2021-12-15 23:55:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,683 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-12-15 23:55:32,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 53 [2021-12-15 23:55:32,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2021-12-15 23:55:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 101 [2021-12-15 23:55:32,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,738 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-12-15 23:55:32,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 37 [2021-12-15 23:55:32,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:32,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-12-15 23:55:32,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-15 23:55:32,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 23:55:32,818 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-15 23:55:32,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-15 23:55:32,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:32,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-15 23:55:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-15 23:55:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 23:55:33,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:34,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031756245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:34,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:55:34,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2021-12-15 23:55:34,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795863896] [2021-12-15 23:55:34,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:34,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-15 23:55:34,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-15 23:55:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4266, Unknown=29, NotChecked=0, Total=4556 [2021-12-15 23:55:34,904 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 61 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-15 23:55:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:42,080 INFO L93 Difference]: Finished difference Result 399 states and 496 transitions. [2021-12-15 23:55:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-15 23:55:42,082 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 63 [2021-12-15 23:55:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:42,087 INFO L225 Difference]: With dead ends: 399 [2021-12-15 23:55:42,088 INFO L226 Difference]: Without dead ends: 321 [2021-12-15 23:55:42,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4230 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1069, Invalid=14148, Unknown=35, NotChecked=0, Total=15252 [2021-12-15 23:55:42,108 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 442 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 4055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 991 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:42,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 2773 Invalid, 4055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2907 Invalid, 0 Unknown, 991 Unchecked, 1.7s Time] [2021-12-15 23:55:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-15 23:55:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 247. [2021-12-15 23:55:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.174863387978142) internal successors, (215), 189 states have internal predecessors, (215), 30 states have call successors, (30), 20 states have call predecessors, (30), 31 states have return successors, (64), 37 states have call predecessors, (64), 30 states have call successors, (64) [2021-12-15 23:55:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 309 transitions. [2021-12-15 23:55:42,165 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 309 transitions. Word has length 63 [2021-12-15 23:55:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:42,166 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 309 transitions. [2021-12-15 23:55:42,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2021-12-15 23:55:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 309 transitions. [2021-12-15 23:55:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 23:55:42,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:42,172 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:42,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 23:55:42,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:42,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:42,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2093878652, now seen corresponding path program 1 times [2021-12-15 23:55:42,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:42,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852995298] [2021-12-15 23:55:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:42,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:55:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:55:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-15 23:55:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:55:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-15 23:55:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-15 23:55:42,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852995298] [2021-12-15 23:55:42,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852995298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83471364] [2021-12-15 23:55:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:42,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:42,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:42,625 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 23:55:42,626 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 23:55:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:42,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-15 23:55:42,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:42,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:42,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-15 23:55:43,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:55:43,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83471364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:43,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:55:43,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2021-12-15 23:55:43,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934988303] [2021-12-15 23:55:43,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:43,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 23:55:43,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 23:55:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-12-15 23:55:43,152 INFO L87 Difference]: Start difference. First operand 247 states and 309 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-15 23:55:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:43,598 INFO L93 Difference]: Finished difference Result 429 states and 502 transitions. [2021-12-15 23:55:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-15 23:55:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2021-12-15 23:55:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:43,600 INFO L225 Difference]: With dead ends: 429 [2021-12-15 23:55:43,600 INFO L226 Difference]: Without dead ends: 240 [2021-12-15 23:55:43,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2021-12-15 23:55:43,601 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 184 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:43,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 275 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 23:55:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-15 23:55:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 191. [2021-12-15 23:55:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 142 states have (on average 1.147887323943662) internal successors, (163), 149 states have internal predecessors, (163), 22 states have call successors, (22), 16 states have call predecessors, (22), 24 states have return successors, (34), 25 states have call predecessors, (34), 22 states have call successors, (34) [2021-12-15 23:55:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2021-12-15 23:55:43,611 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 71 [2021-12-15 23:55:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:43,611 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2021-12-15 23:55:43,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-15 23:55:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2021-12-15 23:55:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 23:55:43,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:43,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-15 23:55:43,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-15 23:55:43,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:43,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash -818250910, now seen corresponding path program 1 times [2021-12-15 23:55:43,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:43,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747856444] [2021-12-15 23:55:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:43,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:55:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:55:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:55:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-15 23:55:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-15 23:55:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-15 23:55:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-15 23:55:44,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:44,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747856444] [2021-12-15 23:55:44,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747856444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:44,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359113756] [2021-12-15 23:55:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:44,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:44,521 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 23:55:44,523 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 23:55:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 206 conjunts are in the unsatisfiable core [2021-12-15 23:55:44,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:44,903 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:44,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:45,145 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:45,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:55:45,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:45,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:46,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:55:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,173 INFO L354 Elim1Store]: treesize reduction 285, result has 13.6 percent of original size [2021-12-15 23:55:54,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 264 treesize of output 179 [2021-12-15 23:55:54,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,205 INFO L354 Elim1Store]: treesize reduction 49, result has 37.2 percent of original size [2021-12-15 23:55:54,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 101 [2021-12-15 23:55:54,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2021-12-15 23:55:54,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 135 [2021-12-15 23:55:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,231 INFO L354 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2021-12-15 23:55:54,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 106 [2021-12-15 23:55:54,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-15 23:55:54,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2021-12-15 23:55:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:54,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-15 23:55:54,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 33 [2021-12-15 23:55:54,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 23:55:54,291 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:55:54,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 101 [2021-12-15 23:55:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 23:55:55,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:57,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359113756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:57,818 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:55:57,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 51 [2021-12-15 23:55:57,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183356670] [2021-12-15 23:55:57,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:57,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-15 23:55:57,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-15 23:55:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3137, Unknown=24, NotChecked=0, Total=3422 [2021-12-15 23:55:57,820 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 51 states, 47 states have (on average 1.872340425531915) internal successors, (88), 41 states have internal predecessors, (88), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-15 23:56:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:56:05,537 INFO L93 Difference]: Finished difference Result 382 states and 442 transitions. [2021-12-15 23:56:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-15 23:56:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.872340425531915) internal successors, (88), 41 states have internal predecessors, (88), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 12 states have call successors, (16) Word has length 66 [2021-12-15 23:56:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:56:05,539 INFO L225 Difference]: With dead ends: 382 [2021-12-15 23:56:05,539 INFO L226 Difference]: Without dead ends: 260 [2021-12-15 23:56:05,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3567 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1190, Invalid=12123, Unknown=27, NotChecked=0, Total=13340 [2021-12-15 23:56:05,542 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 615 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1191 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 23:56:05,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2043 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2000 Invalid, 0 Unknown, 1191 Unchecked, 1.3s Time] [2021-12-15 23:56:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-15 23:56:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2021-12-15 23:56:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 150 states have (on average 1.12) internal successors, (168), 157 states have internal predecessors, (168), 23 states have call successors, (23), 18 states have call predecessors, (23), 26 states have return successors, (34), 25 states have call predecessors, (34), 23 states have call successors, (34) [2021-12-15 23:56:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 225 transitions. [2021-12-15 23:56:05,560 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 225 transitions. Word has length 66 [2021-12-15 23:56:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:56:05,562 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 225 transitions. [2021-12-15 23:56:05,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.872340425531915) internal successors, (88), 41 states have internal predecessors, (88), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-15 23:56:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 225 transitions. [2021-12-15 23:56:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 23:56:05,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:56:05,563 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:56:05,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-15 23:56:05,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:05,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:56:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:56:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1979205398, now seen corresponding path program 1 times [2021-12-15 23:56:05,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:56:05,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993790553] [2021-12-15 23:56:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:05,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:56:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:56:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:56:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-15 23:56:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-15 23:56:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-15 23:56:05,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:56:05,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993790553] [2021-12-15 23:56:05,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993790553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:56:05,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181647800] [2021-12-15 23:56:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:05,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:05,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:56:05,872 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 23:56:05,882 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 23:56:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:05,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 23:56:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:56:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-15 23:56:06,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:56:06,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181647800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:56:06,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 23:56:06,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-15 23:56:06,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541424419] [2021-12-15 23:56:06,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:56:06,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:56:06,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:56:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:56:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:56:06,082 INFO L87 Difference]: Start difference. First operand 201 states and 225 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-15 23:56:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:56:06,095 INFO L93 Difference]: Finished difference Result 246 states and 272 transitions. [2021-12-15 23:56:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:56:06,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2021-12-15 23:56:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:56:06,096 INFO L225 Difference]: With dead ends: 246 [2021-12-15 23:56:06,097 INFO L226 Difference]: Without dead ends: 161 [2021-12-15 23:56:06,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:56:06,097 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:56:06,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:56:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-15 23:56:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 143. [2021-12-15 23:56:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 113 states have internal predecessors, (120), 15 states have call successors, (15), 13 states have call predecessors, (15), 18 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2021-12-15 23:56:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2021-12-15 23:56:06,121 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 71 [2021-12-15 23:56:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:56:06,121 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2021-12-15 23:56:06,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-15 23:56:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2021-12-15 23:56:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-15 23:56:06,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:56:06,122 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 23:56:06,143 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 23:56:06,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:06,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:56:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:56:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash -51453954, now seen corresponding path program 1 times [2021-12-15 23:56:06,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:56:06,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146737872] [2021-12-15 23:56:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:06,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:56:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:56:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:56:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-15 23:56:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-15 23:56:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-15 23:56:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-15 23:56:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-15 23:56:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-15 23:56:06,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:56:06,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146737872] [2021-12-15 23:56:06,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146737872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:56:06,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204903907] [2021-12-15 23:56:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:06,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:56:06,628 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 23:56:06,667 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 23:56:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:06,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-15 23:56:06,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:56:06,992 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-15 23:56:06,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2021-12-15 23:56:07,012 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-15 23:56:07,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2021-12-15 23:56:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 42 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-15 23:56:07,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:56:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-15 23:56:08,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204903907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:56:08,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:56:08,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 7] total 32 [2021-12-15 23:56:08,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573413872] [2021-12-15 23:56:08,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:56:08,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-15 23:56:08,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:56:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-15 23:56:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-12-15 23:56:08,159 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 32 states, 30 states have (on average 4.533333333333333) internal successors, (136), 28 states have internal predecessors, (136), 13 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-15 23:56:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:56:09,051 INFO L93 Difference]: Finished difference Result 222 states and 242 transitions. [2021-12-15 23:56:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 23:56:09,051 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.533333333333333) internal successors, (136), 28 states have internal predecessors, (136), 13 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) Word has length 87 [2021-12-15 23:56:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:56:09,054 INFO L225 Difference]: With dead ends: 222 [2021-12-15 23:56:09,054 INFO L226 Difference]: Without dead ends: 142 [2021-12-15 23:56:09,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=433, Invalid=2323, Unknown=0, NotChecked=0, Total=2756 [2021-12-15 23:56:09,055 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 324 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 23:56:09,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 622 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 23:56:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-15 23:56:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2021-12-15 23:56:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 98 states have internal predecessors, (103), 14 states have call successors, (14), 12 states have call predecessors, (14), 15 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2021-12-15 23:56:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2021-12-15 23:56:09,063 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 87 [2021-12-15 23:56:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:56:09,064 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2021-12-15 23:56:09,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.533333333333333) internal successors, (136), 28 states have internal predecessors, (136), 13 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (32), 13 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-15 23:56:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2021-12-15 23:56:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-15 23:56:09,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:56:09,068 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 23:56:09,085 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 23:56:09,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:09,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:56:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:56:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1523149351, now seen corresponding path program 2 times [2021-12-15 23:56:09,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:56:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849025808] [2021-12-15 23:56:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:09,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:56:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:56:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:56:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-15 23:56:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-15 23:56:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-15 23:56:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-15 23:56:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-15 23:56:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-15 23:56:09,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:56:09,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849025808] [2021-12-15 23:56:09,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849025808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:56:09,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:56:09,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 23:56:09,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953955947] [2021-12-15 23:56:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:56:09,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:56:09,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:56:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:56:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:56:09,422 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-15 23:56:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:56:09,525 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-12-15 23:56:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:56:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2021-12-15 23:56:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:56:09,527 INFO L225 Difference]: With dead ends: 132 [2021-12-15 23:56:09,527 INFO L226 Difference]: Without dead ends: 130 [2021-12-15 23:56:09,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-15 23:56:09,528 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 38 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:56:09,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 207 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:56:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-15 23:56:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-15 23:56:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 98 states have (on average 1.0816326530612246) internal successors, (106), 101 states have internal predecessors, (106), 14 states have call successors, (14), 12 states have call predecessors, (14), 16 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2021-12-15 23:56:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-15 23:56:09,535 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 87 [2021-12-15 23:56:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:56:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-15 23:56:09,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-15 23:56:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-15 23:56:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-15 23:56:09,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:56:09,537 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 23:56:09,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 23:56:09,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:56:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:56:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1360136124, now seen corresponding path program 3 times [2021-12-15 23:56:09,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:56:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765085606] [2021-12-15 23:56:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:56:09,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:56:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-15 23:56:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:56:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:56:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-15 23:56:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-15 23:56:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-15 23:56:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-15 23:56:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-15 23:56:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-15 23:56:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:56:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-15 23:56:10,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:56:10,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765085606] [2021-12-15 23:56:10,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765085606] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:56:10,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667711526] [2021-12-15 23:56:10,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 23:56:10,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:56:10,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:56:10,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:56:10,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 23:56:10,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-15 23:56:10,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 23:56:10,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 229 conjunts are in the unsatisfiable core [2021-12-15 23:56:10,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:56:10,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:56:11,317 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:56:11,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 23:56:11,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:56:11,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-15 23:56:12,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:56:12,865 INFO L354 Elim1Store]: treesize reduction 362, result has 31.8 percent of original size [2021-12-15 23:56:12,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 348 treesize of output 347 [2021-12-15 23:56:12,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:12,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 588 treesize of output 527 [2021-12-15 23:56:13,316 INFO L354 Elim1Store]: treesize reduction 1092, result has 40.4 percent of original size [2021-12-15 23:56:13,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 12 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 14 new quantified variables, introduced 33 case distinctions, treesize of input 18462 treesize of output 8620 [2021-12-15 23:56:13,394 INFO L354 Elim1Store]: treesize reduction 96, result has 43.2 percent of original size [2021-12-15 23:56:13,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 8686 treesize of output 6493 [2021-12-15 23:56:13,522 INFO L354 Elim1Store]: treesize reduction 34, result has 46.9 percent of original size [2021-12-15 23:56:13,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 174 treesize of output 183 [2021-12-15 23:56:13,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 110 [2021-12-15 23:56:13,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-12-15 23:56:13,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-12-15 23:56:13,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:13,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 105 [2021-12-15 23:56:13,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2021-12-15 23:56:13,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 23:56:14,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:56:14,114 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:14,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:14,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2021-12-15 23:56:14,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:14,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-12-15 23:56:15,122 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-12-15 23:56:15,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 5908 treesize of output 5234 [2021-12-15 23:56:15,501 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-15 23:56:15,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 5908 treesize of output 5218 [2021-12-15 23:56:15,982 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-15 23:56:15,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 5915 treesize of output 5223 [2021-12-15 23:56:16,234 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-15 23:56:16,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 5915 treesize of output 5223 [2021-12-15 23:56:16,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:16,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 6084 treesize of output 5376 [2021-12-15 23:56:19,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-12-15 23:56:19,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-15 23:56:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:19,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-12-15 23:56:19,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-15 23:56:19,898 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:19,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2021-12-15 23:56:21,264 INFO L354 Elim1Store]: treesize reduction 30, result has 67.0 percent of original size [2021-12-15 23:56:21,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 948 treesize of output 986 [2021-12-15 23:56:25,298 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:25,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-12-15 23:56:25,502 INFO L354 Elim1Store]: treesize reduction 75, result has 45.3 percent of original size [2021-12-15 23:56:25,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 885 treesize of output 775 [2021-12-15 23:56:32,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:56:32,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2021-12-15 23:56:32,584 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-15 23:56:32,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-15 23:56:32,964 INFO L354 Elim1Store]: treesize reduction 26, result has 62.3 percent of original size [2021-12-15 23:56:32,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 654 treesize of output 387 [2021-12-15 23:56:33,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-15 23:56:33,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 331 [2021-12-15 23:56:34,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-15 23:56:34,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 123 [2021-12-15 23:56:34,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-15 23:56:35,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-15 23:56:35,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-15 23:56:35,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-15 23:56:36,267 INFO L354 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2021-12-15 23:56:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 581 treesize of output 576