./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 [2021-12-17 08:39:39,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 08:39:39,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 08:39:39,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 08:39:39,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 08:39:39,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 08:39:39,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 08:39:39,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 08:39:39,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 08:39:39,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 08:39:39,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 08:39:39,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 08:39:39,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 08:39:39,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 08:39:39,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 08:39:39,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 08:39:39,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 08:39:39,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 08:39:39,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 08:39:39,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 08:39:39,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 08:39:39,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 08:39:39,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 08:39:39,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 08:39:39,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 08:39:39,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 08:39:39,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 08:39:39,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 08:39:39,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 08:39:39,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 08:39:39,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 08:39:39,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 08:39:39,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 08:39:39,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 08:39:39,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 08:39:39,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 08:39:39,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 08:39:39,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 08:39:39,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 08:39:39,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 08:39:39,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 08:39:39,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 08:39:39,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 08:39:39,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 08:39:39,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 08:39:39,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 08:39:39,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 08:39:39,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 08:39:39,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 08:39:39,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 08:39:39,163 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 08:39:39,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 08:39:39,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 08:39:39,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 08:39:39,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 08:39:39,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 08:39:39,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 08:39:39,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 08:39:39,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 08:39:39,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 08:39:39,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:39:39,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 08:39:39,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 08:39:39,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 08:39:39,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 08:39:39,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2021-12-17 08:39:39,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 08:39:39,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 08:39:39,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 08:39:39,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 08:39:39,372 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 08:39:39,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-12-17 08:39:39,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a8b0bb0/1254d709f54d4681ac31de7aa269df00/FLAGc4f2c2d88 [2021-12-17 08:39:39,843 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 08:39:39,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-12-17 08:39:39,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a8b0bb0/1254d709f54d4681ac31de7aa269df00/FLAGc4f2c2d88 [2021-12-17 08:39:40,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a8b0bb0/1254d709f54d4681ac31de7aa269df00 [2021-12-17 08:39:40,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 08:39:40,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 08:39:40,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 08:39:40,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 08:39:40,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 08:39:40,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e2d4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40, skipping insertion in model container [2021-12-17 08:39:40,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 08:39:40,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 08:39:40,490 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] [2021-12-17 08:39:40,493 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] [2021-12-17 08:39:40,493 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] [2021-12-17 08:39:40,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:39:40,499 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 08:39:40,528 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] [2021-12-17 08:39:40,529 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] [2021-12-17 08:39:40,529 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] [2021-12-17 08:39:40,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:39:40,547 INFO L208 MainTranslator]: Completed translation [2021-12-17 08:39:40,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40 WrapperNode [2021-12-17 08:39:40,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 08:39:40,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 08:39:40,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 08:39:40,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 08:39:40,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,587 INFO L137 Inliner]: procedures = 139, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 128 [2021-12-17 08:39:40,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 08:39:40,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 08:39:40,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 08:39:40,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 08:39:40,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 08:39:40,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 08:39:40,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 08:39:40,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 08:39:40,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (1/1) ... [2021-12-17 08:39:40,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:39:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:39:40,660 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) [2021-12-17 08:39:40,669 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 [2021-12-17 08:39:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-12-17 08:39:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-12-17 08:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 08:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-17 08:39:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-17 08:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 08:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 08:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-12-17 08:39:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-12-17 08:39:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-12-17 08:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 08:39:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 08:39:40,761 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 08:39:40,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 08:39:40,990 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 08:39:40,995 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 08:39:40,995 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 08:39:40,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:39:40 BoogieIcfgContainer [2021-12-17 08:39:40,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 08:39:40,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 08:39:40,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 08:39:41,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 08:39:41,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:39:40" (1/3) ... [2021-12-17 08:39:41,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:39:41, skipping insertion in model container [2021-12-17 08:39:41,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:39:40" (2/3) ... [2021-12-17 08:39:41,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:39:41, skipping insertion in model container [2021-12-17 08:39:41,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:39:40" (3/3) ... [2021-12-17 08:39:41,003 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2021-12-17 08:39:41,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 08:39:41,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-17 08:39:41,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 08:39:41,042 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 [2021-12-17 08:39:41,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 08:39:41,054 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) [2021-12-17 08:39:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 08:39:41,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:41,058 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] [2021-12-17 08:39:41,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1577806477, now seen corresponding path program 1 times [2021-12-17 08:39:41,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998574624] [2021-12-17 08:39:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:41,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 08:39:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 08:39:41,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998574624] [2021-12-17 08:39:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998574624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:39:41,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:39:41,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 08:39:41,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760599961] [2021-12-17 08:39:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:39:41,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 08:39:41,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:39:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 08:39:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 08:39:41,335 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) [2021-12-17 08:39:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:39:41,402 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2021-12-17 08:39:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 08:39:41,404 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 [2021-12-17 08:39:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:39:41,413 INFO L225 Difference]: With dead ends: 131 [2021-12-17 08:39:41,413 INFO L226 Difference]: Without dead ends: 64 [2021-12-17 08:39:41,416 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 [2021-12-17 08:39:41,418 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 [2021-12-17 08:39:41,420 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] [2021-12-17 08:39:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-17 08:39:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-12-17 08:39:41,448 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) [2021-12-17 08:39:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2021-12-17 08:39:41,450 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 28 [2021-12-17 08:39:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:39:41,451 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2021-12-17 08:39:41,451 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) [2021-12-17 08:39:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2021-12-17 08:39:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 08:39:41,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:41,453 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] [2021-12-17 08:39:41,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 08:39:41,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash -109345869, now seen corresponding path program 1 times [2021-12-17 08:39:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:41,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394978173] [2021-12-17 08:39:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:41,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 08:39:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 08:39:41,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:41,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394978173] [2021-12-17 08:39:41,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394978173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:39:41,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:39:41,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 08:39:41,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670434474] [2021-12-17 08:39:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:39:41,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 08:39:41,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:39:41,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 08:39:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 08:39:41,612 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) [2021-12-17 08:39:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:39:41,705 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-17 08:39:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 08:39:41,706 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 [2021-12-17 08:39:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:39:41,707 INFO L225 Difference]: With dead ends: 70 [2021-12-17 08:39:41,707 INFO L226 Difference]: Without dead ends: 68 [2021-12-17 08:39:41,723 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 [2021-12-17 08:39:41,724 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 [2021-12-17 08:39:41,725 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] [2021-12-17 08:39:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-17 08:39:41,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-12-17 08:39:41,731 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) [2021-12-17 08:39:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-12-17 08:39:41,732 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 28 [2021-12-17 08:39:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:39:41,732 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-12-17 08:39:41,733 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) [2021-12-17 08:39:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-12-17 08:39:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 08:39:41,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:41,733 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] [2021-12-17 08:39:41,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 08:39:41,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1465257436, now seen corresponding path program 1 times [2021-12-17 08:39:41,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964178921] [2021-12-17 08:39:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:41,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 08:39:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 08:39:41,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964178921] [2021-12-17 08:39:41,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964178921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:39:41,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:39:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 08:39:41,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771811589] [2021-12-17 08:39:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:39:41,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 08:39:41,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:39:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 08:39:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 08:39:41,868 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) [2021-12-17 08:39:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:39:42,144 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2021-12-17 08:39:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 08:39:42,145 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 [2021-12-17 08:39:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:39:42,146 INFO L225 Difference]: With dead ends: 186 [2021-12-17 08:39:42,146 INFO L226 Difference]: Without dead ends: 129 [2021-12-17 08:39:42,147 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 [2021-12-17 08:39:42,148 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 [2021-12-17 08:39:42,148 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] [2021-12-17 08:39:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-17 08:39:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2021-12-17 08:39:42,172 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) [2021-12-17 08:39:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2021-12-17 08:39:42,175 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 28 [2021-12-17 08:39:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:39:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2021-12-17 08:39:42,177 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) [2021-12-17 08:39:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2021-12-17 08:39:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 08:39:42,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:42,181 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] [2021-12-17 08:39:42,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 08:39:42,181 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:42,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1566335676, now seen corresponding path program 1 times [2021-12-17 08:39:42,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:42,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411314304] [2021-12-17 08:39:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:42,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:39:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:39:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 08:39:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 08:39:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 08:39:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 08:39:43,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:43,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411314304] [2021-12-17 08:39:43,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411314304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:39:43,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199454626] [2021-12-17 08:39:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:43,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:39:43,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:39:43,398 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) [2021-12-17 08:39:43,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 08:39:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:43,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 204 conjunts are in the unsatisfiable core [2021-12-17 08:39:43,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:39:43,923 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 08:39:43,924 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 [2021-12-17 08:39:44,134 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-17 08:39:44,135 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 [2021-12-17 08:39:44,287 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 [2021-12-17 08:39:44,291 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 [2021-12-17 08:39:45,166 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 [2021-12-17 08:39:45,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:45,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:45,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,012 INFO L354 Elim1Store]: treesize reduction 168, result has 22.9 percent of original size [2021-12-17 08:39:46,012 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 [2021-12-17 08:39:46,022 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-17 08:39:46,022 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 [2021-12-17 08:39:46,050 INFO L354 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2021-12-17 08:39:46,050 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 [2021-12-17 08:39:46,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,081 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-12-17 08:39:46,081 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 [2021-12-17 08:39:46,090 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 [2021-12-17 08:39:46,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,101 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 [2021-12-17 08:39:46,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,134 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-12-17 08:39:46,135 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 [2021-12-17 08:39:46,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:39:46,152 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 [2021-12-17 08:39:46,161 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 [2021-12-17 08:39:46,209 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 [2021-12-17 08:39:46,223 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-17 08:39:46,224 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 [2021-12-17 08:39:46,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:39:46,271 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 [2021-12-17 08:39:46,274 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 [2021-12-17 08:39:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 08:39:47,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:39:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199454626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:39:48,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 08:39:48,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2021-12-17 08:39:48,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368167339] [2021-12-17 08:39:48,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 08:39:48,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-17 08:39:48,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:39:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-17 08:39:48,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4266, Unknown=29, NotChecked=0, Total=4556 [2021-12-17 08:39:48,676 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) [2021-12-17 08:39:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:39:55,811 INFO L93 Difference]: Finished difference Result 399 states and 496 transitions. [2021-12-17 08:39:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-17 08:39:55,812 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 [2021-12-17 08:39:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:39:55,815 INFO L225 Difference]: With dead ends: 399 [2021-12-17 08:39:55,815 INFO L226 Difference]: Without dead ends: 321 [2021-12-17 08:39:55,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4230 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1069, Invalid=14148, Unknown=35, NotChecked=0, Total=15252 [2021-12-17 08:39:55,823 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 [2021-12-17 08:39:55,825 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] [2021-12-17 08:39:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-17 08:39:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 247. [2021-12-17 08:39:55,848 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) [2021-12-17 08:39:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 309 transitions. [2021-12-17 08:39:55,853 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 309 transitions. Word has length 63 [2021-12-17 08:39:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:39:55,854 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 309 transitions. [2021-12-17 08:39:55,855 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) [2021-12-17 08:39:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 309 transitions. [2021-12-17 08:39:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 08:39:55,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:55,861 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] [2021-12-17 08:39:55,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 08:39:56,079 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 [2021-12-17 08:39:56,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2093878652, now seen corresponding path program 1 times [2021-12-17 08:39:56,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:56,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772303064] [2021-12-17 08:39:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:56,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:39:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:39:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 08:39:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:39:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 08:39:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 08:39:56,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:56,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772303064] [2021-12-17 08:39:56,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772303064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:39:56,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498461774] [2021-12-17 08:39:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:56,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:39:56,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:39:56,357 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) [2021-12-17 08:39:56,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 08:39:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-17 08:39:56,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:39:56,625 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 [2021-12-17 08:39:56,632 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 [2021-12-17 08:39:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-17 08:39:56,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 08:39:56,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498461774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:39:56,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 08:39:56,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2021-12-17 08:39:56,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593584649] [2021-12-17 08:39:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:39:56,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 08:39:56,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:39:56,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 08:39:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-12-17 08:39:56,935 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) [2021-12-17 08:39:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:39:57,363 INFO L93 Difference]: Finished difference Result 429 states and 502 transitions. [2021-12-17 08:39:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 08:39:57,364 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 [2021-12-17 08:39:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:39:57,365 INFO L225 Difference]: With dead ends: 429 [2021-12-17 08:39:57,365 INFO L226 Difference]: Without dead ends: 240 [2021-12-17 08:39:57,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2021-12-17 08:39:57,367 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 [2021-12-17 08:39:57,367 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] [2021-12-17 08:39:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-17 08:39:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 191. [2021-12-17 08:39:57,386 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) [2021-12-17 08:39:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2021-12-17 08:39:57,388 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 71 [2021-12-17 08:39:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:39:57,391 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2021-12-17 08:39:57,391 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) [2021-12-17 08:39:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2021-12-17 08:39:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 08:39:57,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:39:57,392 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] [2021-12-17 08:39:57,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 08:39:57,609 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 [2021-12-17 08:39:57,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:39:57,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:39:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash -818250910, now seen corresponding path program 1 times [2021-12-17 08:39:57,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:39:57,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575169658] [2021-12-17 08:39:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:57,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:39:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:39:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:39:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:39:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:39:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 08:39:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 08:39:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 08:39:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-17 08:39:58,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:39:58,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575169658] [2021-12-17 08:39:58,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575169658] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:39:58,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774441734] [2021-12-17 08:39:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:39:58,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:39:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:39:58,237 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) [2021-12-17 08:39:58,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 08:39:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:39:58,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 206 conjunts are in the unsatisfiable core [2021-12-17 08:39:58,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:39:58,643 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 08:39:58,643 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 [2021-12-17 08:39:58,803 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 08:39:58,803 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 [2021-12-17 08:39:58,849 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 [2021-12-17 08:39:58,855 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 [2021-12-17 08:39:59,437 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 [2021-12-17 08:40:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,284 INFO L354 Elim1Store]: treesize reduction 285, result has 13.6 percent of original size [2021-12-17 08:40:05,284 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 [2021-12-17 08:40:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 08:40:05,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,338 INFO L354 Elim1Store]: treesize reduction 49, result has 37.2 percent of original size [2021-12-17 08:40:05,339 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 [2021-12-17 08:40:05,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,346 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 [2021-12-17 08:40:05,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,352 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 [2021-12-17 08:40:05,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,368 INFO L354 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2021-12-17 08:40:05,369 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 [2021-12-17 08:40:05,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,376 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 [2021-12-17 08:40:05,381 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 [2021-12-17 08:40:05,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:05,390 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 [2021-12-17 08:40:05,398 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 [2021-12-17 08:40:05,420 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 [2021-12-17 08:40:05,429 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 08:40:05,430 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 [2021-12-17 08:40:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 08:40:06,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:40:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774441734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:40:08,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 08:40:08,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 51 [2021-12-17 08:40:08,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730871206] [2021-12-17 08:40:08,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 08:40:08,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-17 08:40:08,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:40:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-17 08:40:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3138, Unknown=23, NotChecked=0, Total=3422 [2021-12-17 08:40:08,841 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) [2021-12-17 08:40:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:40:16,233 INFO L93 Difference]: Finished difference Result 382 states and 442 transitions. [2021-12-17 08:40:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-17 08:40:16,253 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 [2021-12-17 08:40:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:40:16,254 INFO L225 Difference]: With dead ends: 382 [2021-12-17 08:40:16,254 INFO L226 Difference]: Without dead ends: 260 [2021-12-17 08:40:16,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3568 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=1190, Invalid=12124, Unknown=26, NotChecked=0, Total=13340 [2021-12-17 08:40:16,257 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 615 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 08:40:16,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2043 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2000 Invalid, 0 Unknown, 1191 Unchecked, 1.2s Time] [2021-12-17 08:40:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-17 08:40:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2021-12-17 08:40:16,268 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) [2021-12-17 08:40:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 225 transitions. [2021-12-17 08:40:16,269 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 225 transitions. Word has length 66 [2021-12-17 08:40:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:40:16,270 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 225 transitions. [2021-12-17 08:40:16,270 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) [2021-12-17 08:40:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 225 transitions. [2021-12-17 08:40:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 08:40:16,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:40:16,271 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] [2021-12-17 08:40:16,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 08:40:16,471 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 [2021-12-17 08:40:16,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:40:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:40:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1979205398, now seen corresponding path program 1 times [2021-12-17 08:40:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:40:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144187262] [2021-12-17 08:40:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:16,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:40:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:40:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:40:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 08:40:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 08:40:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-17 08:40:16,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:40:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144187262] [2021-12-17 08:40:16,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144187262] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:40:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346104450] [2021-12-17 08:40:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:16,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:40:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:40:16,573 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) [2021-12-17 08:40:16,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 08:40:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:16,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 08:40:16,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:40:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 08:40:16,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 08:40:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346104450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:40:16,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 08:40:16,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-17 08:40:16,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96852080] [2021-12-17 08:40:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:40:16,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 08:40:16,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:40:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 08:40:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 08:40:16,800 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) [2021-12-17 08:40:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:40:16,816 INFO L93 Difference]: Finished difference Result 246 states and 272 transitions. [2021-12-17 08:40:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 08:40:16,816 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 [2021-12-17 08:40:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:40:16,818 INFO L225 Difference]: With dead ends: 246 [2021-12-17 08:40:16,818 INFO L226 Difference]: Without dead ends: 161 [2021-12-17 08:40:16,819 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 [2021-12-17 08:40:16,819 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 [2021-12-17 08:40:16,820 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] [2021-12-17 08:40:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-17 08:40:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 143. [2021-12-17 08:40:16,831 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) [2021-12-17 08:40:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2021-12-17 08:40:16,832 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 71 [2021-12-17 08:40:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:40:16,832 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2021-12-17 08:40:16,833 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) [2021-12-17 08:40:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2021-12-17 08:40:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 08:40:16,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:40:16,835 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] [2021-12-17 08:40:16,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 08:40:17,052 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 [2021-12-17 08:40:17,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:40:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:40:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash -51453954, now seen corresponding path program 1 times [2021-12-17 08:40:17,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:40:17,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416052659] [2021-12-17 08:40:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:17,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:40:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:40:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:40:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 08:40:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 08:40:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 08:40:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 08:40:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 08:40:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-17 08:40:17,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:40:17,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416052659] [2021-12-17 08:40:17,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416052659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:40:17,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341462223] [2021-12-17 08:40:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:17,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:40:17,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:40:17,309 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) [2021-12-17 08:40:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 08:40:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:17,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-17 08:40:17,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:40:17,752 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-17 08:40:17,753 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 [2021-12-17 08:40:17,777 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-17 08:40:17,778 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 [2021-12-17 08:40:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 42 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 08:40:18,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 08:40:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 08:40:18,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341462223] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 08:40:18,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 08:40:18,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 7] total 32 [2021-12-17 08:40:18,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810081943] [2021-12-17 08:40:18,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 08:40:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-17 08:40:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:40:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-17 08:40:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-12-17 08:40:18,780 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) [2021-12-17 08:40:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:40:19,770 INFO L93 Difference]: Finished difference Result 222 states and 242 transitions. [2021-12-17 08:40:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 08:40:19,771 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 [2021-12-17 08:40:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:40:19,771 INFO L225 Difference]: With dead ends: 222 [2021-12-17 08:40:19,772 INFO L226 Difference]: Without dead ends: 142 [2021-12-17 08:40:19,772 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 [2021-12-17 08:40:19,773 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 324 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2021-12-17 08:40:19,773 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] [2021-12-17 08:40:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-17 08:40:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2021-12-17 08:40:19,778 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) [2021-12-17 08:40:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2021-12-17 08:40:19,779 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 87 [2021-12-17 08:40:19,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:40:19,779 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2021-12-17 08:40:19,779 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) [2021-12-17 08:40:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2021-12-17 08:40:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 08:40:19,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:40:19,780 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] [2021-12-17 08:40:19,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 08:40:19,980 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 [2021-12-17 08:40:19,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:40:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:40:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1523149351, now seen corresponding path program 2 times [2021-12-17 08:40:19,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:40:19,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242068782] [2021-12-17 08:40:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:19,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:40:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:40:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:40:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 08:40:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 08:40:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 08:40:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 08:40:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 08:40:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-17 08:40:20,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:40:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242068782] [2021-12-17 08:40:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242068782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:40:20,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:40:20,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 08:40:20,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824100356] [2021-12-17 08:40:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:40:20,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 08:40:20,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:40:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 08:40:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 08:40:20,118 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) [2021-12-17 08:40:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:40:20,218 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-12-17 08:40:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 08:40:20,219 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 [2021-12-17 08:40:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:40:20,220 INFO L225 Difference]: With dead ends: 132 [2021-12-17 08:40:20,220 INFO L226 Difference]: Without dead ends: 130 [2021-12-17 08:40:20,220 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 [2021-12-17 08:40:20,220 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 [2021-12-17 08:40:20,220 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] [2021-12-17 08:40:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-17 08:40:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-17 08:40:20,225 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) [2021-12-17 08:40:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-17 08:40:20,226 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 87 [2021-12-17 08:40:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:40:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-17 08:40:20,226 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) [2021-12-17 08:40:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-17 08:40:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 08:40:20,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:40:20,228 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] [2021-12-17 08:40:20,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 08:40:20,228 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:40:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:40:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1360136124, now seen corresponding path program 3 times [2021-12-17 08:40:20,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:40:20,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649203302] [2021-12-17 08:40:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:40:20,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:40:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 08:40:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 08:40:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 08:40:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 08:40:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 08:40:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 08:40:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 08:40:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 08:40:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 08:40:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:40:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 08:40:21,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:40:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649203302] [2021-12-17 08:40:21,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649203302] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 08:40:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969336960] [2021-12-17 08:40:21,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 08:40:21,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 08:40:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:40:21,385 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) [2021-12-17 08:40:21,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 08:40:21,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-17 08:40:21,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 08:40:21,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 229 conjunts are in the unsatisfiable core [2021-12-17 08:40:21,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 08:40:21,700 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 [2021-12-17 08:40:22,056 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 08:40:22,057 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 [2021-12-17 08:40:22,132 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 [2021-12-17 08:40:22,137 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 [2021-12-17 08:40:23,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 08:40:23,375 INFO L354 Elim1Store]: treesize reduction 362, result has 31.8 percent of original size [2021-12-17 08:40:23,383 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 [2021-12-17 08:40:23,431 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:23,432 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 [2021-12-17 08:40:23,915 INFO L354 Elim1Store]: treesize reduction 1092, result has 40.4 percent of original size [2021-12-17 08:40:23,916 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 [2021-12-17 08:40:24,021 INFO L354 Elim1Store]: treesize reduction 96, result has 43.2 percent of original size [2021-12-17 08:40:24,021 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 [2021-12-17 08:40:24,107 INFO L354 Elim1Store]: treesize reduction 34, result has 46.9 percent of original size [2021-12-17 08:40:24,108 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 [2021-12-17 08:40:24,183 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 [2021-12-17 08:40:24,232 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 [2021-12-17 08:40:24,294 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 [2021-12-17 08:40:24,349 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:24,350 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 [2021-12-17 08:40:24,398 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 [2021-12-17 08:40:24,556 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 [2021-12-17 08:40:24,675 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 [2021-12-17 08:40:24,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 08:40:24,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 08:40:24,806 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 [2021-12-17 08:40:25,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:25,168 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 [2021-12-17 08:40:25,732 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-12-17 08:40:25,732 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 [2021-12-17 08:40:26,065 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-17 08:40:26,066 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 [2021-12-17 08:40:26,492 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-17 08:40:26,492 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 [2021-12-17 08:40:26,695 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-17 08:40:26,696 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 [2021-12-17 08:40:26,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:26,975 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 [2021-12-17 08:40:29,262 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 [2021-12-17 08:40:29,329 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 [2021-12-17 08:40:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 08:40:29,716 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 [2021-12-17 08:40:29,853 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 [2021-12-17 08:40:29,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:29,909 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 [2021-12-17 08:40:31,387 INFO L354 Elim1Store]: treesize reduction 30, result has 67.0 percent of original size [2021-12-17 08:40:31,388 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 [2021-12-17 08:40:34,663 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:34,664 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 [2021-12-17 08:40:34,781 INFO L354 Elim1Store]: treesize reduction 75, result has 45.3 percent of original size [2021-12-17 08:40:34,782 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 [2021-12-17 08:40:40,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:40,136 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 [2021-12-17 08:40:40,462 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-17 08:40:40,462 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 [2021-12-17 08:40:40,832 INFO L354 Elim1Store]: treesize reduction 26, result has 62.3 percent of original size [2021-12-17 08:40:40,833 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 [2021-12-17 08:40:41,814 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 [2021-12-17 08:40:41,848 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 [2021-12-17 08:40:42,014 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 [2021-12-17 08:40:42,386 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 [2021-12-17 08:40:42,991 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 [2021-12-17 08:40:43,909 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 [2021-12-17 08:40:43,941 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 [2021-12-17 08:40:43,964 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 [2021-12-17 08:40:44,607 INFO L354 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2021-12-17 08:40:44,607 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 [2021-12-17 08:40:47,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 08:40:47,606 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 21 treesize of output 7 [2021-12-17 08:40:47,813 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-17 08:40:47,814 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 21 treesize of output 15 [2021-12-17 08:40:47,933 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-17 08:40:47,933 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 21 treesize of output 15 [2021-12-17 08:40:47,976 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 21 treesize of output 7 [2021-12-17 08:40:48,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:48,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1181 treesize of output 893 [2021-12-17 08:40:50,330 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 [2021-12-17 08:40:50,586 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 7 treesize of output 3 [2021-12-17 08:40:50,649 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 08:40:52,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 08:40:52,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1507 treesize of output 2055 Killed by 15