/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 13:17:19,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 13:17:19,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 13:17:19,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 13:17:19,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 13:17:19,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 13:17:19,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 13:17:19,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 13:17:19,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 13:17:19,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 13:17:19,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 13:17:19,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 13:17:19,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 13:17:19,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 13:17:19,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 13:17:19,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 13:17:19,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 13:17:19,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 13:17:19,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 13:17:19,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 13:17:19,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 13:17:19,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 13:17:19,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 13:17:19,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 13:17:19,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 13:17:19,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 13:17:19,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 13:17:19,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 13:17:19,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 13:17:19,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 13:17:19,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 13:17:19,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 13:17:19,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 13:17:19,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 13:17:19,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 13:17:19,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 13:17:19,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 13:17:19,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 13:17:19,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 13:17:19,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 13:17:19,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 13:17:19,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 13:17:19,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 13:17:19,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 13:17:19,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 13:17:19,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 13:17:19,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 13:17:19,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 13:17:19,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 13:17:19,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 13:17:19,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 13:17:19,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:17:19,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 13:17:19,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 13:17:19,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 13:17:19,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 13:17:19,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 13:17:19,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 13:17:19,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 13:17:20,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 13:17:20,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 13:17:20,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 13:17:20,015 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 13:17:20,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-15 13:17:20,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed984648/67749fd17520439d8d838ab038e20d32/FLAG21ee43dd2 [2022-03-15 13:17:20,499 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 13:17:20,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-15 13:17:20,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed984648/67749fd17520439d8d838ab038e20d32/FLAG21ee43dd2 [2022-03-15 13:17:20,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed984648/67749fd17520439d8d838ab038e20d32 [2022-03-15 13:17:20,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 13:17:20,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 13:17:20,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 13:17:20,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 13:17:20,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 13:17:20,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:17:20" (1/1) ... [2022-03-15 13:17:20,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780c7412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:20, skipping insertion in model container [2022-03-15 13:17:20,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:17:20" (1/1) ... [2022-03-15 13:17:20,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 13:17:20,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 13:17:20,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-15 13:17:20,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:17:20,954 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 13:17:20,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-15 13:17:20,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:17:21,042 INFO L208 MainTranslator]: Completed translation [2022-03-15 13:17:21,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21 WrapperNode [2022-03-15 13:17:21,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 13:17:21,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 13:17:21,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 13:17:21,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 13:17:21,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,101 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-03-15 13:17:21,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 13:17:21,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 13:17:21,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 13:17:21,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 13:17:21,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 13:17:21,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 13:17:21,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 13:17:21,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 13:17:21,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (1/1) ... [2022-03-15 13:17:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:17:21,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:21,177 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) [2022-03-15 13:17:21,191 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 [2022-03-15 13:17:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 13:17:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 13:17:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 13:17:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 13:17:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-15 13:17:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 13:17:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-03-15 13:17:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-03-15 13:17:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 13:17:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 13:17:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 13:17:21,215 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 13:17:21,317 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 13:17:21,318 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 13:17:21,446 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 13:17:21,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 13:17:21,451 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 13:17:21,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:17:21 BoogieIcfgContainer [2022-03-15 13:17:21,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 13:17:21,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 13:17:21,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 13:17:21,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 13:17:21,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 01:17:20" (1/3) ... [2022-03-15 13:17:21,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9edd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:17:21, skipping insertion in model container [2022-03-15 13:17:21,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:17:21" (2/3) ... [2022-03-15 13:17:21,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9edd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:17:21, skipping insertion in model container [2022-03-15 13:17:21,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:17:21" (3/3) ... [2022-03-15 13:17:21,462 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-03-15 13:17:21,465 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 13:17:21,465 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 13:17:21,465 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 13:17:21,465 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 13:17:21,484 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,484 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,484 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,484 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,484 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,485 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,486 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,486 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,486 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,486 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,486 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,487 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,488 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,489 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,490 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,493 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,494 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,494 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,494 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:17:21,496 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 13:17:21,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 13:17:21,527 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=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 13:17:21,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 13:17:21,538 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 97 transitions, 202 flow [2022-03-15 13:17:21,596 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-15 13:17:21,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:21,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:21,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -412203326, now seen corresponding path program 1 times [2022-03-15 13:17:21,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:21,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816027790] [2022-03-15 13:17:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:21,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:21,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816027790] [2022-03-15 13:17:21,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816027790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:17:21,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:17:21,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 13:17:21,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729592938] [2022-03-15 13:17:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:17:21,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 13:17:21,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 13:17:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:17:21,847 INFO L87 Difference]: Start difference. First operand has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:21,869 INFO L93 Difference]: Finished difference Result 351 states and 657 transitions. [2022-03-15 13:17:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 13:17:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-15 13:17:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:21,880 INFO L225 Difference]: With dead ends: 351 [2022-03-15 13:17:21,880 INFO L226 Difference]: Without dead ends: 297 [2022-03-15 13:17:21,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:17:21,883 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:21,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-15 13:17:21,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-03-15 13:17:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.8547297297297298) internal successors, (549), 296 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 549 transitions. [2022-03-15 13:17:21,931 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 549 transitions. Word has length 58 [2022-03-15 13:17:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:21,932 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 549 transitions. [2022-03-15 13:17:21,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 549 transitions. [2022-03-15 13:17:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-15 13:17:21,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:21,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:21,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 13:17:21,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1088740258, now seen corresponding path program 1 times [2022-03-15 13:17:21,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:21,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928209803] [2022-03-15 13:17:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:22,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:22,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928209803] [2022-03-15 13:17:22,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928209803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:17:22,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:17:22,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:17:22,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829342296] [2022-03-15 13:17:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:17:22,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:17:22,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:22,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:17:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:22,022 INFO L87 Difference]: Start difference. First operand 297 states and 549 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:22,050 INFO L93 Difference]: Finished difference Result 437 states and 829 transitions. [2022-03-15 13:17:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:17:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-15 13:17:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:22,053 INFO L225 Difference]: With dead ends: 437 [2022-03-15 13:17:22,053 INFO L226 Difference]: Without dead ends: 437 [2022-03-15 13:17:22,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:22,055 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:22,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 156 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-15 13:17:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 311. [2022-03-15 13:17:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.8612903225806452) internal successors, (577), 310 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 577 transitions. [2022-03-15 13:17:22,074 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 577 transitions. Word has length 58 [2022-03-15 13:17:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:22,074 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 577 transitions. [2022-03-15 13:17:22,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 577 transitions. [2022-03-15 13:17:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-15 13:17:22,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:22,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:22,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 13:17:22,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1826468594, now seen corresponding path program 1 times [2022-03-15 13:17:22,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:22,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814214436] [2022-03-15 13:17:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:22,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:22,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814214436] [2022-03-15 13:17:22,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814214436] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:17:22,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:17:22,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:17:22,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961786109] [2022-03-15 13:17:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:17:22,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:17:22,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:17:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:22,139 INFO L87 Difference]: Start difference. First operand 311 states and 577 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:22,155 INFO L93 Difference]: Finished difference Result 444 states and 843 transitions. [2022-03-15 13:17:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:17:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-15 13:17:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:22,157 INFO L225 Difference]: With dead ends: 444 [2022-03-15 13:17:22,157 INFO L226 Difference]: Without dead ends: 444 [2022-03-15 13:17:22,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:22,158 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:22,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 159 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-03-15 13:17:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 330. [2022-03-15 13:17:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.8693009118541033) internal successors, (615), 329 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 615 transitions. [2022-03-15 13:17:22,169 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 615 transitions. Word has length 69 [2022-03-15 13:17:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:22,169 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 615 transitions. [2022-03-15 13:17:22,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 615 transitions. [2022-03-15 13:17:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-15 13:17:22,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:22,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:22,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 13:17:22,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash 88002593, now seen corresponding path program 1 times [2022-03-15 13:17:22,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:22,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610162891] [2022-03-15 13:17:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:22,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:22,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:22,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610162891] [2022-03-15 13:17:22,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610162891] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:22,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636179234] [2022-03-15 13:17:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:22,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:22,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:22,244 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) [2022-03-15 13:17:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 13:17:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 13:17:22,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:22,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:22,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636179234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:22,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:22,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 13:17:22,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946242028] [2022-03-15 13:17:22,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:22,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 13:17:22,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 13:17:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-15 13:17:22,605 INFO L87 Difference]: Start difference. First operand 330 states and 615 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:22,659 INFO L93 Difference]: Finished difference Result 634 states and 1223 transitions. [2022-03-15 13:17:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 13:17:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-15 13:17:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:22,662 INFO L225 Difference]: With dead ends: 634 [2022-03-15 13:17:22,662 INFO L226 Difference]: Without dead ends: 634 [2022-03-15 13:17:22,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-15 13:17:22,668 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 303 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:22,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 518 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-15 13:17:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-03-15 13:17:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.9320695102685623) internal successors, (1223), 633 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1223 transitions. [2022-03-15 13:17:22,688 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1223 transitions. Word has length 77 [2022-03-15 13:17:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1223 transitions. [2022-03-15 13:17:22,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1223 transitions. [2022-03-15 13:17:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 13:17:22,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:22,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:22,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 13:17:22,905 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 [2022-03-15 13:17:22,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1150192967, now seen corresponding path program 2 times [2022-03-15 13:17:22,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:22,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57589655] [2022-03-15 13:17:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:22,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 13:17:22,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:22,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57589655] [2022-03-15 13:17:22,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57589655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:17:22,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:17:22,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:17:22,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469048068] [2022-03-15 13:17:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:17:22,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:17:22,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:17:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:22,991 INFO L87 Difference]: Start difference. First operand 634 states and 1223 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:23,007 INFO L93 Difference]: Finished difference Result 580 states and 1088 transitions. [2022-03-15 13:17:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:17:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-03-15 13:17:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:23,009 INFO L225 Difference]: With dead ends: 580 [2022-03-15 13:17:23,009 INFO L226 Difference]: Without dead ends: 580 [2022-03-15 13:17:23,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:17:23,010 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 21 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:23,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 152 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-03-15 13:17:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-03-15 13:17:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.8791018998272884) internal successors, (1088), 579 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1088 transitions. [2022-03-15 13:17:23,019 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1088 transitions. Word has length 93 [2022-03-15 13:17:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:23,021 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1088 transitions. [2022-03-15 13:17:23,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1088 transitions. [2022-03-15 13:17:23,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-15 13:17:23,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:23,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:23,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 13:17:23,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 746770257, now seen corresponding path program 3 times [2022-03-15 13:17:23,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:23,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556697981] [2022-03-15 13:17:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 13:17:23,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:23,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556697981] [2022-03-15 13:17:23,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556697981] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:23,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819648430] [2022-03-15 13:17:23,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:17:23,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:23,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:23,101 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) [2022-03-15 13:17:23,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 13:17:23,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:17:23,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:17:23,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 13:17:23,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 13:17:23,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-15 13:17:23,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819648430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:23,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:23,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 13:17:23,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197249026] [2022-03-15 13:17:23,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:23,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 13:17:23,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 13:17:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-15 13:17:23,479 INFO L87 Difference]: Start difference. First operand 580 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:23,525 INFO L93 Difference]: Finished difference Result 1154 states and 2182 transitions. [2022-03-15 13:17:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 13:17:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-03-15 13:17:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:23,531 INFO L225 Difference]: With dead ends: 1154 [2022-03-15 13:17:23,531 INFO L226 Difference]: Without dead ends: 1154 [2022-03-15 13:17:23,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-15 13:17:23,533 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 171 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:23,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 572 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-15 13:17:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-03-15 13:17:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.8924544666088465) internal successors, (2182), 1153 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2182 transitions. [2022-03-15 13:17:23,559 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2182 transitions. Word has length 93 [2022-03-15 13:17:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:23,561 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2182 transitions. [2022-03-15 13:17:23,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2182 transitions. [2022-03-15 13:17:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-15 13:17:23,565 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:23,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:23,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 13:17:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-15 13:17:23,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -27559221, now seen corresponding path program 4 times [2022-03-15 13:17:23,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:23,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143451137] [2022-03-15 13:17:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:23,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:23,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143451137] [2022-03-15 13:17:23,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143451137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:23,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791616063] [2022-03-15 13:17:23,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:17:23,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:23,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:23,884 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) [2022-03-15 13:17:23,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 13:17:23,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:17:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:17:23,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 13:17:23,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:24,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:24,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791616063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:24,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:24,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 13:17:24,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189701800] [2022-03-15 13:17:24,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:24,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 13:17:24,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 13:17:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-15 13:17:24,318 INFO L87 Difference]: Start difference. First operand 1154 states and 2182 transitions. Second operand has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:24,443 INFO L93 Difference]: Finished difference Result 2302 states and 4370 transitions. [2022-03-15 13:17:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:17:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-03-15 13:17:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:24,451 INFO L225 Difference]: With dead ends: 2302 [2022-03-15 13:17:24,451 INFO L226 Difference]: Without dead ends: 2302 [2022-03-15 13:17:24,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-03-15 13:17:24,452 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 680 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:24,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 615 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-03-15 13:17:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2022-03-15 13:17:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2301 states have (on average 1.899174272055628) internal successors, (4370), 2301 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 4370 transitions. [2022-03-15 13:17:24,490 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 4370 transitions. Word has length 115 [2022-03-15 13:17:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 4370 transitions. [2022-03-15 13:17:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 4370 transitions. [2022-03-15 13:17:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-03-15 13:17:24,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:24,495 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:24,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 13:17:24,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:24,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -617723337, now seen corresponding path program 5 times [2022-03-15 13:17:24,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:24,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674785300] [2022-03-15 13:17:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:24,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-15 13:17:24,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:24,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674785300] [2022-03-15 13:17:24,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674785300] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:24,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141725782] [2022-03-15 13:17:24,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:17:24,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:24,814 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) [2022-03-15 13:17:24,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 13:17:24,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 13:17:24,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:17:24,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 13:17:24,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-15 13:17:25,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-15 13:17:25,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141725782] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:25,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:25,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 13:17:25,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253702012] [2022-03-15 13:17:25,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:25,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 13:17:25,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 13:17:25,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-15 13:17:25,303 INFO L87 Difference]: Start difference. First operand 2302 states and 4370 transitions. Second operand has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:25,438 INFO L93 Difference]: Finished difference Result 4518 states and 8550 transitions. [2022-03-15 13:17:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:17:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-03-15 13:17:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:25,453 INFO L225 Difference]: With dead ends: 4518 [2022-03-15 13:17:25,454 INFO L226 Difference]: Without dead ends: 4518 [2022-03-15 13:17:25,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-03-15 13:17:25,455 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 810 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:25,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 750 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:17:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-03-15 13:17:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-03-15 13:17:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4517 states have (on average 1.8928492362187292) internal successors, (8550), 4517 states have internal predecessors, (8550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 8550 transitions. [2022-03-15 13:17:25,529 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 8550 transitions. Word has length 159 [2022-03-15 13:17:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:25,529 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 8550 transitions. [2022-03-15 13:17:25,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 8550 transitions. [2022-03-15 13:17:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-03-15 13:17:25,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:25,537 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:25,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 13:17:25,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:25,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -695670005, now seen corresponding path program 6 times [2022-03-15 13:17:25,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:25,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708432917] [2022-03-15 13:17:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:25,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:25,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708432917] [2022-03-15 13:17:25,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708432917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:25,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080478329] [2022-03-15 13:17:25,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:17:25,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:25,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:25,918 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) [2022-03-15 13:17:25,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 13:17:26,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-15 13:17:26,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:17:26,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 13:17:26,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:26,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:26,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080478329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:26,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:26,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-15 13:17:26,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602421986] [2022-03-15 13:17:26,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:26,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 13:17:26,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 13:17:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 13:17:26,699 INFO L87 Difference]: Start difference. First operand 4518 states and 8550 transitions. Second operand has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:27,151 INFO L93 Difference]: Finished difference Result 9054 states and 17118 transitions. [2022-03-15 13:17:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 13:17:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-03-15 13:17:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:27,176 INFO L225 Difference]: With dead ends: 9054 [2022-03-15 13:17:27,176 INFO L226 Difference]: Without dead ends: 9054 [2022-03-15 13:17:27,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1192, Invalid=2590, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 13:17:27,177 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 1871 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:27,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 1114 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:17:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2022-03-15 13:17:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9054. [2022-03-15 13:17:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 9053 states have (on average 1.8908649066607754) internal successors, (17118), 9053 states have internal predecessors, (17118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 17118 transitions. [2022-03-15 13:17:27,315 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 17118 transitions. Word has length 191 [2022-03-15 13:17:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:27,315 INFO L470 AbstractCegarLoop]: Abstraction has 9054 states and 17118 transitions. [2022-03-15 13:17:27,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 17118 transitions. [2022-03-15 13:17:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-03-15 13:17:27,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:27,331 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:27,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 13:17:27,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:27,548 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash 447962103, now seen corresponding path program 7 times [2022-03-15 13:17:27,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:27,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098539778] [2022-03-15 13:17:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-15 13:17:27,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:27,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098539778] [2022-03-15 13:17:27,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098539778] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:27,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552023774] [2022-03-15 13:17:27,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:17:27,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:27,745 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) [2022-03-15 13:17:27,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 13:17:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 13:17:27,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-15 13:17:28,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-15 13:17:28,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552023774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:28,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:28,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-15 13:17:28,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520354287] [2022-03-15 13:17:28,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:28,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 13:17:28,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 13:17:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 13:17:28,781 INFO L87 Difference]: Start difference. First operand 9054 states and 17118 transitions. Second operand has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:17:29,266 INFO L93 Difference]: Finished difference Result 17966 states and 33862 transitions. [2022-03-15 13:17:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 13:17:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2022-03-15 13:17:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:17:29,304 INFO L225 Difference]: With dead ends: 17966 [2022-03-15 13:17:29,304 INFO L226 Difference]: Without dead ends: 17966 [2022-03-15 13:17:29,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1192, Invalid=2590, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 13:17:29,306 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 2523 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:17:29,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 1161 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:17:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-03-15 13:17:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 17966. [2022-03-15 13:17:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17966 states, 17965 states have (on average 1.8848872808238242) internal successors, (33862), 17965 states have internal predecessors, (33862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17966 states to 17966 states and 33862 transitions. [2022-03-15 13:17:29,593 INFO L78 Accepts]: Start accepts. Automaton has 17966 states and 33862 transitions. Word has length 279 [2022-03-15 13:17:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:17:29,593 INFO L470 AbstractCegarLoop]: Abstraction has 17966 states and 33862 transitions. [2022-03-15 13:17:29,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:17:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 17966 states and 33862 transitions. [2022-03-15 13:17:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-03-15 13:17:29,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:17:29,626 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:17:29,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 13:17:29,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:29,843 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:17:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:17:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 970632075, now seen corresponding path program 8 times [2022-03-15 13:17:29,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:17:29,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030880782] [2022-03-15 13:17:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:17:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:17:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:17:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 71 proven. 1954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:30,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:17:30,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030880782] [2022-03-15 13:17:30,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030880782] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:17:30,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454970862] [2022-03-15 13:17:30,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:17:30,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:17:30,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:17:30,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:17:30,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 13:17:30,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:17:30,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:17:30,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-15 13:17:30,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:17:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 57 proven. 1968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:31,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:17:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 57 proven. 1968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:17:32,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454970862] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:17:32,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:17:32,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 72 [2022-03-15 13:17:32,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628023069] [2022-03-15 13:17:32,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:17:32,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-15 13:17:32,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:17:32,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-15 13:17:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=727, Invalid=4385, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 13:17:32,253 INFO L87 Difference]: Start difference. First operand 17966 states and 33862 transitions. Second operand has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:53,523 INFO L93 Difference]: Finished difference Result 26156 states and 49207 transitions. [2022-03-15 13:23:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2774 states. [2022-03-15 13:23:53,523 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2022-03-15 13:23:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:53,577 INFO L225 Difference]: With dead ends: 26156 [2022-03-15 13:23:53,577 INFO L226 Difference]: Without dead ends: 26156 [2022-03-15 13:23:54,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4449 GetRequests, 1642 SyntacticMatches, 1 SemanticMatches, 2806 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4086993 ImplicationChecksByTransitivity, 355.4s TimeCoverageRelationStatistics Valid=1304691, Invalid=6577365, Unknown=0, NotChecked=0, Total=7882056 [2022-03-15 13:23:54,198 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 49604 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 4948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49604 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4948 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:54,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49604 Valid, 2794 Invalid, 5855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4948 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 13:23:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26156 states. [2022-03-15 13:23:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26156 to 25013. [2022-03-15 13:23:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25013 states, 25012 states have (on average 1.8831360946745561) internal successors, (47101), 25012 states have internal predecessors, (47101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25013 states to 25013 states and 47101 transitions. [2022-03-15 13:23:54,885 INFO L78 Accepts]: Start accepts. Automaton has 25013 states and 47101 transitions. Word has length 343 [2022-03-15 13:23:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 25013 states and 47101 transitions. [2022-03-15 13:23:54,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 25013 states and 47101 transitions. [2022-03-15 13:23:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-03-15 13:23:54,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:54,927 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:54,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 13:23:55,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:23:55,143 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:23:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash -453903054, now seen corresponding path program 9 times [2022-03-15 13:23:55,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:55,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893946449] [2022-03-15 13:23:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-15 13:23:55,572 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:55,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893946449] [2022-03-15 13:23:55,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893946449] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:23:55,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815440854] [2022-03-15 13:23:55,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:23:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:23:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:23:55,576 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:23:55,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 13:23:55,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-03-15 13:23:55,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:23:55,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 13:23:55,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:23:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-15 13:23:56,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:23:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-15 13:23:57,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815440854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:23:57,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:23:57,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 43 [2022-03-15 13:23:57,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952110014] [2022-03-15 13:23:57,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:23:57,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 13:23:57,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 13:23:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 13:23:57,297 INFO L87 Difference]: Start difference. First operand 25013 states and 47101 transitions. Second operand has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:58,086 INFO L93 Difference]: Finished difference Result 30921 states and 58197 transitions. [2022-03-15 13:23:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 13:23:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2022-03-15 13:23:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:58,136 INFO L225 Difference]: With dead ends: 30921 [2022-03-15 13:23:58,136 INFO L226 Difference]: Without dead ends: 30921 [2022-03-15 13:23:58,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 779 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:23:58,138 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 2562 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:58,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2562 Valid, 1369 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:23:58,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30921 states. [2022-03-15 13:23:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30921 to 30921. [2022-03-15 13:23:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30921 states, 30920 states have (on average 1.8821798188874515) internal successors, (58197), 30920 states have internal predecessors, (58197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30921 states to 30921 states and 58197 transitions. [2022-03-15 13:23:58,586 INFO L78 Accepts]: Start accepts. Automaton has 30921 states and 58197 transitions. Word has length 394 [2022-03-15 13:23:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:58,586 INFO L470 AbstractCegarLoop]: Abstraction has 30921 states and 58197 transitions. [2022-03-15 13:23:58,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 30921 states and 58197 transitions. [2022-03-15 13:23:58,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-15 13:23:58,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:58,631 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:58,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 13:23:58,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 13:23:58,847 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:23:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1784322982, now seen corresponding path program 10 times [2022-03-15 13:23:58,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:58,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921792339] [2022-03-15 13:23:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:01,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:01,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921792339] [2022-03-15 13:24:01,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921792339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:24:01,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462834507] [2022-03-15 13:24:01,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:24:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:24:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:24:01,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:24:01,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 13:24:01,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:24:01,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:24:01,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-15 13:24:01,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:24:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:03,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:24:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:04,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462834507] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:24:04,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:24:04,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-15 13:24:04,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937174384] [2022-03-15 13:24:04,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:24:04,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-15 13:24:04,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:04,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-15 13:24:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 13:24:04,880 INFO L87 Difference]: Start difference. First operand 30921 states and 58197 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:20,348 INFO L93 Difference]: Finished difference Result 764550 states and 1465032 transitions. [2022-03-15 13:25:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 981 states. [2022-03-15 13:25:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-15 13:25:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:22,461 INFO L225 Difference]: With dead ends: 764550 [2022-03-15 13:25:22,461 INFO L226 Difference]: Without dead ends: 764290 [2022-03-15 13:25:22,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1858 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 984 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405331 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=3949, Invalid=967261, Unknown=0, NotChecked=0, Total=971210 [2022-03-15 13:25:22,515 INFO L933 BasicCegarLoop]: 13882 mSDtfsCounter, 16494 mSDsluCounter, 1124995 mSDsCounter, 0 mSdLazyCounter, 154652 mSolverCounterSat, 977 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16494 SdHoareTripleChecker+Valid, 1137193 SdHoareTripleChecker+Invalid, 155629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 154652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:22,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16494 Valid, 1137193 Invalid, 155629 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [977 Valid, 154652 Invalid, 0 Unknown, 0 Unchecked, 40.4s Time] [2022-03-15 13:25:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764290 states. [2022-03-15 13:25:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764290 to 32595. [2022-03-15 13:25:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32595 states, 32594 states have (on average 1.8841197766460085) internal successors, (61411), 32594 states have internal predecessors, (61411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32595 states to 32595 states and 61411 transitions. [2022-03-15 13:25:27,970 INFO L78 Accepts]: Start accepts. Automaton has 32595 states and 61411 transitions. Word has length 438 [2022-03-15 13:25:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:27,971 INFO L470 AbstractCegarLoop]: Abstraction has 32595 states and 61411 transitions. [2022-03-15 13:25:27,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32595 states and 61411 transitions. [2022-03-15 13:25:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-15 13:25:28,015 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:28,016 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:28,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 13:25:28,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 13:25:28,231 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:25:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2051785962, now seen corresponding path program 11 times [2022-03-15 13:25:28,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:28,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425020999] [2022-03-15 13:25:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:31,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:31,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425020999] [2022-03-15 13:25:31,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425020999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:25:31,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077001715] [2022-03-15 13:25:31,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:25:31,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:25:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:25:31,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:25:31,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 13:25:31,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 13:25:31,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:25:31,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-15 13:25:31,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:25:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:32,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:25:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:34,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077001715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:25:34,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:25:34,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-15 13:25:34,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955988387] [2022-03-15 13:25:34,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:25:34,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-15 13:25:34,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:34,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-15 13:25:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 13:25:34,087 INFO L87 Difference]: Start difference. First operand 32595 states and 61411 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:48,594 INFO L93 Difference]: Finished difference Result 746382 states and 1431433 transitions. [2022-03-15 13:26:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 938 states. [2022-03-15 13:26:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-15 13:26:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:50,609 INFO L225 Difference]: With dead ends: 746382 [2022-03-15 13:26:50,609 INFO L226 Difference]: Without dead ends: 746369 [2022-03-15 13:26:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1816 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 942 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368506 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=3610, Invalid=886582, Unknown=0, NotChecked=0, Total=890192 [2022-03-15 13:26:50,658 INFO L933 BasicCegarLoop]: 13826 mSDtfsCounter, 16117 mSDsluCounter, 1147131 mSDsCounter, 0 mSdLazyCounter, 155287 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16117 SdHoareTripleChecker+Valid, 1159315 SdHoareTripleChecker+Invalid, 156257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.1s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 155287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:50,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16117 Valid, 1159315 Invalid, 156257 Unknown, 0 Unchecked, 1.1s Time], IncrementalHoareTripleChecker [970 Valid, 155287 Invalid, 0 Unknown, 0 Unchecked, 41.1s Time] [2022-03-15 13:26:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746369 states. [2022-03-15 13:26:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746369 to 32679. [2022-03-15 13:26:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32679 states, 32678 states have (on average 1.8846624640430871) internal successors, (61587), 32678 states have internal predecessors, (61587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32679 states to 32679 states and 61587 transitions. [2022-03-15 13:26:56,112 INFO L78 Accepts]: Start accepts. Automaton has 32679 states and 61587 transitions. Word has length 438 [2022-03-15 13:26:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:56,112 INFO L470 AbstractCegarLoop]: Abstraction has 32679 states and 61587 transitions. [2022-03-15 13:26:56,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32679 states and 61587 transitions. [2022-03-15 13:26:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-15 13:26:56,158 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:56,158 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:56,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 13:26:56,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 13:26:56,375 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:26:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1995053348, now seen corresponding path program 12 times [2022-03-15 13:26:56,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:56,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50921793] [2022-03-15 13:26:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:59,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:59,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50921793] [2022-03-15 13:26:59,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50921793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:26:59,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201057278] [2022-03-15 13:26:59,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:26:59,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:26:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:26:59,168 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:26:59,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 13:26:59,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-15 13:26:59,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:26:59,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-15 13:26:59,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:27:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:01,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:27:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:02,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201057278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:27:02,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:27:02,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-15 13:27:02,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534969249] [2022-03-15 13:27:02,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:27:02,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-15 13:27:02,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-15 13:27:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 13:27:02,317 INFO L87 Difference]: Start difference. First operand 32679 states and 61587 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:17,637 INFO L93 Difference]: Finished difference Result 736738 states and 1412969 transitions. [2022-03-15 13:28:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 934 states. [2022-03-15 13:28:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-15 13:28:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:20,800 INFO L225 Difference]: With dead ends: 736738 [2022-03-15 13:28:20,801 INFO L226 Difference]: Without dead ends: 736725 [2022-03-15 13:28:20,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1812 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 938 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365080 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=3594, Invalid=879066, Unknown=0, NotChecked=0, Total=882660 [2022-03-15 13:28:20,850 INFO L933 BasicCegarLoop]: 13738 mSDtfsCounter, 15993 mSDsluCounter, 1126105 mSDsCounter, 0 mSdLazyCounter, 152771 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15993 SdHoareTripleChecker+Valid, 1138221 SdHoareTripleChecker+Invalid, 153737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 152771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:20,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15993 Valid, 1138221 Invalid, 153737 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [966 Valid, 152771 Invalid, 0 Unknown, 0 Unchecked, 41.3s Time] [2022-03-15 13:28:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736725 states. [2022-03-15 13:28:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736725 to 32917. [2022-03-15 13:28:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32917 states, 32916 states have (on average 1.8857090776522056) internal successors, (62070), 32916 states have internal predecessors, (62070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32917 states to 32917 states and 62070 transitions. [2022-03-15 13:28:26,325 INFO L78 Accepts]: Start accepts. Automaton has 32917 states and 62070 transitions. Word has length 438 [2022-03-15 13:28:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:26,326 INFO L470 AbstractCegarLoop]: Abstraction has 32917 states and 62070 transitions. [2022-03-15 13:28:26,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32917 states and 62070 transitions. [2022-03-15 13:28:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-15 13:28:26,369 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:26,369 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:26,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 13:28:26,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 13:28:26,570 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 13:28:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 561129814, now seen corresponding path program 13 times [2022-03-15 13:28:26,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:26,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021994103] [2022-03-15 13:28:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:29,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:29,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021994103] [2022-03-15 13:28:29,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021994103] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:28:29,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480812352] [2022-03-15 13:28:29,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:28:29,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:28:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:28:29,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:28:29,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 13:28:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:29,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-15 13:28:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:28:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:30,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:28:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:32,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480812352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:28:32,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:28:32,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-15 13:28:32,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753605947] [2022-03-15 13:28:32,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:28:32,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-15 13:28:32,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-15 13:28:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 13:28:32,228 INFO L87 Difference]: Start difference. First operand 32917 states and 62070 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 13:28:37,200 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 13:28:37,200 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 13:28:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 13:28:37,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=417, Invalid=21339, Unknown=0, NotChecked=0, Total=21756 [2022-03-15 13:28:37,214 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 907 mSDsluCounter, 70267 mSDsCounter, 0 mSdLazyCounter, 10617 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 71096 SdHoareTripleChecker+Invalid, 10697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 10617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:37,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 71096 Invalid, 10697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 10617 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-15 13:28:37,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-03-15 13:28:37,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 13:28:37,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 13:28:37,417 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (32917states) and FLOYD_HOARE automaton (currently 74 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7243 states constructed, input type IntersectNwa). [2022-03-15 13:28:37,418 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 13:28:37,420 INFO L732 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1] [2022-03-15 13:28:37,421 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 13:28:37,421 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 13:28:37,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 01:28:37 BasicIcfg [2022-03-15 13:28:37,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 13:28:37,431 INFO L158 Benchmark]: Toolchain (without parser) took 676901.55ms. Allocated memory was 188.7MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 136.5MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-03-15 13:28:37,431 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 155.3MB in the beginning and 155.1MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 13:28:37,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.73ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 137.0MB in the end (delta: -614.6kB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2022-03-15 13:28:37,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 188.7MB. Free memory was 137.0MB in the beginning and 134.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 13:28:37,431 INFO L158 Benchmark]: Boogie Preprocessor took 27.13ms. Allocated memory is still 188.7MB. Free memory was 134.5MB in the beginning and 132.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 13:28:37,431 INFO L158 Benchmark]: RCFGBuilder took 326.14ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 120.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 13:28:37,432 INFO L158 Benchmark]: TraceAbstraction took 675973.31ms. Allocated memory was 188.7MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 119.8MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-03-15 13:28:37,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 155.3MB in the beginning and 155.1MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 511.73ms. Allocated memory is still 188.7MB. Free memory was 136.4MB in the beginning and 137.0MB in the end (delta: -614.6kB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 188.7MB. Free memory was 137.0MB in the beginning and 134.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.13ms. Allocated memory is still 188.7MB. Free memory was 134.5MB in the beginning and 132.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 326.14ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 120.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 675973.31ms. Allocated memory was 188.7MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 119.8MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (32917states) and FLOYD_HOARE automaton (currently 74 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7243 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (32917states) and FLOYD_HOARE automaton (currently 74 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7243 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 110 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 675.9s, OverallIterations: 16, TraceHistogramMax: 20, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.3s, AutomataDifference: 622.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108103 SdHoareTripleChecker+Valid, 128.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108103 mSDsluCounter, 3515263 SdHoareTripleChecker+Invalid, 106.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3476820 mSDsCounter, 8141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 474821 IncrementalHoareTripleChecker+Invalid, 482962 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8141 mSolverCounterUnsat, 43512 mSDtfsCounter, 474821 mSolverCounterSat, 3.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13835 GetRequests, 7711 SyntacticMatches, 26 SemanticMatches, 6098 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5231163 ImplicationChecksByTransitivity, 451.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32917occurred in iteration=15, InterpolantAutomatonStates: 5848, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 2150576 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 7084 NumberOfCodeBlocks, 6988 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 10447 ConstructedInterpolants, 0 QuantifiedInterpolants, 44683 SizeOfPredicates, 274 NumberOfNonLiveVariables, 8126 ConjunctsInSsa, 782 ConjunctsInUnsatCore, 40 InterpolantComputations, 4 PerfectInterpolantSequences, 5776/64880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown