/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:47:27,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:47:27,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:47:27,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:47:27,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:47:27,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:47:27,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:47:27,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:47:27,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:47:27,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:47:27,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:47:27,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:47:27,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:47:27,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:47:27,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:47:27,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:47:27,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:47:27,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:47:27,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:47:27,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:47:27,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:47:27,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:47:27,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:47:27,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:47:28,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:47:28,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:47:28,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:47:28,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:47:28,016 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-Separate.epf [2022-01-18 13:47:28,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:47:28,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:47:28,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:47:28,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:47:28,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:47:28,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:47:28,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:47:28,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:47:28,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:47:28,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:47:28,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:47:28,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:47:28,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:47:28,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:47:28,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:47:28,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:47:28,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:47:28,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:47:28,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:47:28,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:47:28,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:47:28,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:47:28,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:47:28,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:47:28,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:47:28,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:47:28,044 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:47:28,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:47:28,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:47:28,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:47:28,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:47:28,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:47:28,250 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:47:28,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-01-18 13:47:28,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0609665/118f278e6dd9438db001b09fe4f26c62/FLAGe08709646 [2022-01-18 13:47:28,719 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:47:28,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-01-18 13:47:28,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0609665/118f278e6dd9438db001b09fe4f26c62/FLAGe08709646 [2022-01-18 13:47:28,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0609665/118f278e6dd9438db001b09fe4f26c62 [2022-01-18 13:47:28,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:47:28,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:47:28,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:47:28,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:47:28,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:47:28,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:47:28" (1/1) ... [2022-01-18 13:47:28,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7749077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:28, skipping insertion in model container [2022-01-18 13:47:28,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:47:28" (1/1) ... [2022-01-18 13:47:28,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:47:28,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:47:29,025 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-deagle/circular_buffer_bad.i[30440,30453] [2022-01-18 13:47:29,038 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-deagle/circular_buffer_bad.i[30895,30908] [2022-01-18 13:47:29,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:47:29,053 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:47:29,097 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-deagle/circular_buffer_bad.i[30440,30453] [2022-01-18 13:47:29,099 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-deagle/circular_buffer_bad.i[30895,30908] [2022-01-18 13:47:29,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:47:29,133 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:47:29,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29 WrapperNode [2022-01-18 13:47:29,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:47:29,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:47:29,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:47:29,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:47:29,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,188 INFO L137 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-01-18 13:47:29,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:47:29,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:47:29,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:47:29,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:47:29,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:47:29,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:47:29,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:47:29,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:47:29,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (1/1) ... [2022-01-18 13:47:29,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:47:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:29,249 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) [2022-01-18 13:47:29,255 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 [2022-01-18 13:47:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:47:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-18 13:47:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-18 13:47:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-18 13:47:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-18 13:47:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:47:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:47:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:47:29,276 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:47:29,359 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:47:29,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:47:29,544 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:47:29,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:47:29,551 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 13:47:29,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:47:29 BoogieIcfgContainer [2022-01-18 13:47:29,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:47:29,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:47:29,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:47:29,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:47:29,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:47:28" (1/3) ... [2022-01-18 13:47:29,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72960626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:47:29, skipping insertion in model container [2022-01-18 13:47:29,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:29" (2/3) ... [2022-01-18 13:47:29,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72960626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:47:29, skipping insertion in model container [2022-01-18 13:47:29,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:47:29" (3/3) ... [2022-01-18 13:47:29,557 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-01-18 13:47:29,560 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:47:29,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:47:29,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-18 13:47:29,561 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:47:29,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,588 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,589 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,590 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,591 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,592 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,593 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,594 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,595 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,596 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,596 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,596 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,597 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,598 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,599 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,599 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,599 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,600 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,601 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,602 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,603 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,604 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,605 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,605 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,606 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,607 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,608 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,608 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,608 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,609 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,610 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,611 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,611 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,611 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,613 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,613 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,613 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,613 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,613 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,614 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,616 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,617 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,617 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,617 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:47:29,619 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:47:29,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:47:29,651 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, 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 [2022-01-18 13:47:29,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 13:47:29,659 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 147 places, 150 transitions, 316 flow [2022-01-18 13:47:29,809 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5211 states, 5208 states have (on average 2.9086021505376345) internal successors, (15148), 5210 states have internal predecessors, (15148), 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) [2022-01-18 13:47:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 5211 states, 5208 states have (on average 2.9086021505376345) internal successors, (15148), 5210 states have internal predecessors, (15148), 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) [2022-01-18 13:47:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 13:47:29,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:29,845 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] [2022-01-18 13:47:29,845 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1386578492, now seen corresponding path program 1 times [2022-01-18 13:47:29,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:29,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181486322] [2022-01-18 13:47:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:29,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:29,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:29,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704874829] [2022-01-18 13:47:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:29,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:29,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:30,000 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) [2022-01-18 13:47:30,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 13:47:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:30,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:47:30,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:30,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:30,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181486322] [2022-01-18 13:47:30,513 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704874829] [2022-01-18 13:47:30,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704874829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:30,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:30,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 13:47:30,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679533148] [2022-01-18 13:47:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:30,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:47:30,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:47:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:47:30,561 INFO L87 Difference]: Start difference. First operand has 5211 states, 5208 states have (on average 2.9086021505376345) internal successors, (15148), 5210 states have internal predecessors, (15148), 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 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-01-18 13:47:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:30,669 INFO L93 Difference]: Finished difference Result 5334 states and 14959 transitions. [2022-01-18 13:47:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 13:47:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2022-01-18 13:47:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:30,711 INFO L225 Difference]: With dead ends: 5334 [2022-01-18 13:47:30,711 INFO L226 Difference]: Without dead ends: 4998 [2022-01-18 13:47:30,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:47:30,716 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 86 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:30,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 487 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-01-18 13:47:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2022-01-18 13:47:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4998. [2022-01-18 13:47:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4998 states, 4995 states have (on average 2.8026026026026027) internal successors, (13999), 4997 states have internal predecessors, (13999), 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) [2022-01-18 13:47:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 13999 transitions. [2022-01-18 13:47:30,931 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 13999 transitions. Word has length 65 [2022-01-18 13:47:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:30,935 INFO L470 AbstractCegarLoop]: Abstraction has 4998 states and 13999 transitions. [2022-01-18 13:47:30,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-01-18 13:47:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 13999 transitions. [2022-01-18 13:47:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-18 13:47:30,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:30,942 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] [2022-01-18 13:47:30,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 13:47:31,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-18 13:47:31,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash 494049616, now seen corresponding path program 1 times [2022-01-18 13:47:31,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:31,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433532364] [2022-01-18 13:47:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:31,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:31,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:31,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239112784] [2022-01-18 13:47:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:31,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:31,180 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) [2022-01-18 13:47:31,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 13:47:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:47:31,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:33,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:33,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433532364] [2022-01-18 13:47:33,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239112784] [2022-01-18 13:47:33,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239112784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:33,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:33,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 13:47:33,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582349360] [2022-01-18 13:47:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:33,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:47:33,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:47:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=5, Unknown=1, NotChecked=0, Total=12 [2022-01-18 13:47:33,449 INFO L87 Difference]: Start difference. First operand 4998 states and 13999 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-01-18 13:47:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:33,497 INFO L93 Difference]: Finished difference Result 4718 states and 13213 transitions. [2022-01-18 13:47:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 13:47:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2022-01-18 13:47:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:33,515 INFO L225 Difference]: With dead ends: 4718 [2022-01-18 13:47:33,515 INFO L226 Difference]: Without dead ends: 4682 [2022-01-18 13:47:33,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6, Invalid=5, Unknown=1, NotChecked=0, Total=12 [2022-01-18 13:47:33,516 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 91 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:33,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 319 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 52 Unchecked, 0.0s Time] [2022-01-18 13:47:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-01-18 13:47:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4298. [2022-01-18 13:47:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 2.8033511752385385) internal successors, (12046), 4297 states have internal predecessors, (12046), 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) [2022-01-18 13:47:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 12046 transitions. [2022-01-18 13:47:33,690 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 12046 transitions. Word has length 71 [2022-01-18 13:47:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:33,692 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 12046 transitions. [2022-01-18 13:47:33,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-01-18 13:47:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 12046 transitions. [2022-01-18 13:47:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 13:47:33,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:33,696 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] [2022-01-18 13:47:33,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:33,912 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,SelfDestructingSolverStorable1 [2022-01-18 13:47:33,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash 204627122, now seen corresponding path program 1 times [2022-01-18 13:47:33,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060282763] [2022-01-18 13:47:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:33,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:34,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060282763] [2022-01-18 13:47:34,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060282763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:34,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:34,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:47:34,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618606955] [2022-01-18 13:47:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:34,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:47:34,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:47:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:47:34,053 INFO L87 Difference]: Start difference. First operand 4298 states and 12046 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-18 13:47:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:34,091 INFO L93 Difference]: Finished difference Result 5594 states and 15541 transitions. [2022-01-18 13:47:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:47:34,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-18 13:47:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:34,110 INFO L225 Difference]: With dead ends: 5594 [2022-01-18 13:47:34,110 INFO L226 Difference]: Without dead ends: 5366 [2022-01-18 13:47:34,111 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 [2022-01-18 13:47:34,112 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 70 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:34,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:47:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2022-01-18 13:47:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 5366. [2022-01-18 13:47:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 2.785461323392358) internal successors, (14944), 5365 states have internal predecessors, (14944), 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) [2022-01-18 13:47:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 14944 transitions. [2022-01-18 13:47:34,223 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 14944 transitions. Word has length 72 [2022-01-18 13:47:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:34,225 INFO L470 AbstractCegarLoop]: Abstraction has 5366 states and 14944 transitions. [2022-01-18 13:47:34,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-01-18 13:47:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 14944 transitions. [2022-01-18 13:47:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-18 13:47:34,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:34,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:34,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:47:34,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash -432690170, now seen corresponding path program 1 times [2022-01-18 13:47:34,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436708782] [2022-01-18 13:47:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:34,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:34,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436708782] [2022-01-18 13:47:34,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436708782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:34,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:47:34,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393977711] [2022-01-18 13:47:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:34,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:47:34,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:47:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:47:34,330 INFO L87 Difference]: Start difference. First operand 5366 states and 14944 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-01-18 13:47:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:34,361 INFO L93 Difference]: Finished difference Result 3091 states and 8038 transitions. [2022-01-18 13:47:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:47:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-01-18 13:47:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:34,382 INFO L225 Difference]: With dead ends: 3091 [2022-01-18 13:47:34,383 INFO L226 Difference]: Without dead ends: 3091 [2022-01-18 13:47:34,383 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 [2022-01-18 13:47:34,385 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 74 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:34,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 213 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:47:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2022-01-18 13:47:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2445. [2022-01-18 13:47:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2443 states have (on average 2.606631191158412) internal successors, (6368), 2444 states have internal predecessors, (6368), 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) [2022-01-18 13:47:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 6368 transitions. [2022-01-18 13:47:34,432 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 6368 transitions. Word has length 92 [2022-01-18 13:47:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:34,433 INFO L470 AbstractCegarLoop]: Abstraction has 2445 states and 6368 transitions. [2022-01-18 13:47:34,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-01-18 13:47:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 6368 transitions. [2022-01-18 13:47:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-18 13:47:34,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:34,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:34,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:47:34,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1576312575, now seen corresponding path program 1 times [2022-01-18 13:47:34,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282138200] [2022-01-18 13:47:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:34,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:34,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282138200] [2022-01-18 13:47:34,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282138200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:34,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:34,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 13:47:34,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224918073] [2022-01-18 13:47:34,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:34,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 13:47:34,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:34,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 13:47:34,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 13:47:34,601 INFO L87 Difference]: Start difference. First operand 2445 states and 6368 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2022-01-18 13:47:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:34,656 INFO L93 Difference]: Finished difference Result 2969 states and 7737 transitions. [2022-01-18 13:47:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 13:47:34,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 [2022-01-18 13:47:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:34,662 INFO L225 Difference]: With dead ends: 2969 [2022-01-18 13:47:34,663 INFO L226 Difference]: Without dead ends: 2969 [2022-01-18 13:47:34,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:47:34,663 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 375 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:34,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 323 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:47:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2022-01-18 13:47:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2893. [2022-01-18 13:47:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2891 states have (on average 2.6098235904531304) internal successors, (7545), 2892 states have internal predecessors, (7545), 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) [2022-01-18 13:47:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 7545 transitions. [2022-01-18 13:47:34,711 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 7545 transitions. Word has length 93 [2022-01-18 13:47:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:34,711 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 7545 transitions. [2022-01-18 13:47:34,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2022-01-18 13:47:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 7545 transitions. [2022-01-18 13:47:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 13:47:34,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:34,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:34,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:47:34,716 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1284434283, now seen corresponding path program 1 times [2022-01-18 13:47:34,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547506027] [2022-01-18 13:47:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:34,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:34,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:34,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692958327] [2022-01-18 13:47:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:34,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:34,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:34,729 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) [2022-01-18 13:47:34,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 13:47:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 13:47:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:35,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:35,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547506027] [2022-01-18 13:47:35,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692958327] [2022-01-18 13:47:35,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692958327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:35,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:35,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 13:47:35,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027152342] [2022-01-18 13:47:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:35,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 13:47:35,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 13:47:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 13:47:35,335 INFO L87 Difference]: Start difference. First operand 2893 states and 7545 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:47:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:35,432 INFO L93 Difference]: Finished difference Result 4334 states and 11292 transitions. [2022-01-18 13:47:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 13:47:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-18 13:47:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:35,441 INFO L225 Difference]: With dead ends: 4334 [2022-01-18 13:47:35,441 INFO L226 Difference]: Without dead ends: 4334 [2022-01-18 13:47:35,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 13:47:35,442 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 578 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:35,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 524 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:47:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2022-01-18 13:47:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4188. [2022-01-18 13:47:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4186 states have (on average 2.608695652173913) internal successors, (10920), 4187 states have internal predecessors, (10920), 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) [2022-01-18 13:47:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 10920 transitions. [2022-01-18 13:47:35,514 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 10920 transitions. Word has length 96 [2022-01-18 13:47:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 10920 transitions. [2022-01-18 13:47:35,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:47:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 10920 transitions. [2022-01-18 13:47:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:35,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:35,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:35,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 13:47:35,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:35,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1635197725, now seen corresponding path program 1 times [2022-01-18 13:47:35,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:35,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727576124] [2022-01-18 13:47:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:35,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:35,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:35,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4721157] [2022-01-18 13:47:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:35,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:35,768 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) [2022-01-18 13:47:35,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 13:47:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:35,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:35,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:35,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:36,074 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:36,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:36,097 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:36,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:36,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:36,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:36,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:36,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:37,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:37,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727576124] [2022-01-18 13:47:37,213 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4721157] [2022-01-18 13:47:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4721157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:37,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:37,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:37,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181965382] [2022-01-18 13:47:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:37,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:37,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:37,215 INFO L87 Difference]: Start difference. First operand 4188 states and 10920 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:37,560 INFO L93 Difference]: Finished difference Result 8616 states and 22673 transitions. [2022-01-18 13:47:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 13:47:37,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:37,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:37,578 INFO L225 Difference]: With dead ends: 8616 [2022-01-18 13:47:37,578 INFO L226 Difference]: Without dead ends: 8616 [2022-01-18 13:47:37,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2022-01-18 13:47:37,579 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 746 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:37,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1673 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 232 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-01-18 13:47:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-01-18 13:47:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 5056. [2022-01-18 13:47:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5054 states have (on average 2.6125840918084684) internal successors, (13204), 5055 states have internal predecessors, (13204), 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) [2022-01-18 13:47:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 13204 transitions. [2022-01-18 13:47:37,686 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 13204 transitions. Word has length 101 [2022-01-18 13:47:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:37,687 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 13204 transitions. [2022-01-18 13:47:37,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 13204 transitions. [2022-01-18 13:47:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:37,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:37,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:37,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:37,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:37,909 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -639006909, now seen corresponding path program 2 times [2022-01-18 13:47:37,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674484976] [2022-01-18 13:47:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:37,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:37,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869148890] [2022-01-18 13:47:37,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:47:37,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:37,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:37,922 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) [2022-01-18 13:47:37,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 13:47:38,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 13:47:38,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:38,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:38,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:38,236 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:38,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:38,257 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:38,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:38,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:38,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:38,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:38,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:39,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:39,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:39,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674484976] [2022-01-18 13:47:39,288 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:39,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869148890] [2022-01-18 13:47:39,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869148890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:39,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:39,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:39,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436153054] [2022-01-18 13:47:39,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:39,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:39,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:39,289 INFO L87 Difference]: Start difference. First operand 5056 states and 13204 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:39,370 INFO L93 Difference]: Finished difference Result 5580 states and 14541 transitions. [2022-01-18 13:47:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 13:47:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:39,381 INFO L225 Difference]: With dead ends: 5580 [2022-01-18 13:47:39,381 INFO L226 Difference]: Without dead ends: 5562 [2022-01-18 13:47:39,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:47:39,382 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 201 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:39,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1286 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 221 Unchecked, 0.0s Time] [2022-01-18 13:47:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2022-01-18 13:47:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5347. [2022-01-18 13:47:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 5345 states have (on average 2.6170252572497663) internal successors, (13988), 5346 states have internal predecessors, (13988), 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) [2022-01-18 13:47:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 13988 transitions. [2022-01-18 13:47:39,479 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 13988 transitions. Word has length 101 [2022-01-18 13:47:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:39,479 INFO L470 AbstractCegarLoop]: Abstraction has 5347 states and 13988 transitions. [2022-01-18 13:47:39,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 13988 transitions. [2022-01-18 13:47:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:39,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:39,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:39,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:39,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1979206471, now seen corresponding path program 3 times [2022-01-18 13:47:39,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:39,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862930088] [2022-01-18 13:47:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:39,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:39,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:39,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771353935] [2022-01-18 13:47:39,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:47:39,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:39,736 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) [2022-01-18 13:47:39,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 13:47:39,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-18 13:47:39,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:39,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:39,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:39,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:40,070 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:40,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:40,088 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:40,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:40,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:40,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:40,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:40,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:41,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:41,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862930088] [2022-01-18 13:47:41,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771353935] [2022-01-18 13:47:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771353935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:41,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:41,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594082007] [2022-01-18 13:47:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:41,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:41,083 INFO L87 Difference]: Start difference. First operand 5347 states and 13988 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:41,441 INFO L93 Difference]: Finished difference Result 10260 states and 26862 transitions. [2022-01-18 13:47:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 13:47:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:41,462 INFO L225 Difference]: With dead ends: 10260 [2022-01-18 13:47:41,462 INFO L226 Difference]: Without dead ends: 10236 [2022-01-18 13:47:41,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-01-18 13:47:41,464 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1048 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:41,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 1800 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 214 Invalid, 0 Unknown, 285 Unchecked, 0.1s Time] [2022-01-18 13:47:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10236 states. [2022-01-18 13:47:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10236 to 6046. [2022-01-18 13:47:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 6044 states have (on average 2.6168100595632033) internal successors, (15816), 6045 states have internal predecessors, (15816), 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) [2022-01-18 13:47:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 15816 transitions. [2022-01-18 13:47:41,600 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 15816 transitions. Word has length 101 [2022-01-18 13:47:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:41,600 INFO L470 AbstractCegarLoop]: Abstraction has 6046 states and 15816 transitions. [2022-01-18 13:47:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 15816 transitions. [2022-01-18 13:47:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:41,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:41,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:41,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:41,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:41,823 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:41,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -365921763, now seen corresponding path program 4 times [2022-01-18 13:47:41,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:41,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878960327] [2022-01-18 13:47:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:41,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:41,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:41,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726206673] [2022-01-18 13:47:41,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:47:41,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:41,837 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) [2022-01-18 13:47:41,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 13:47:42,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:47:42,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:42,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 13:47:42,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:42,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:42,192 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:42,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:42,218 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 13:47:42,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 13:47:42,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:42,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:42,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:42,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:43,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:43,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878960327] [2022-01-18 13:47:43,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726206673] [2022-01-18 13:47:43,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726206673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:43,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:43,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:43,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256827232] [2022-01-18 13:47:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:43,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:43,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:43,249 INFO L87 Difference]: Start difference. First operand 6046 states and 15816 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:43,801 INFO L93 Difference]: Finished difference Result 12226 states and 32057 transitions. [2022-01-18 13:47:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:47:43,802 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:43,827 INFO L225 Difference]: With dead ends: 12226 [2022-01-18 13:47:43,828 INFO L226 Difference]: Without dead ends: 12212 [2022-01-18 13:47:43,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=736, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:47:43,828 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1188 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:43,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 1844 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 255 Invalid, 0 Unknown, 377 Unchecked, 0.2s Time] [2022-01-18 13:47:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2022-01-18 13:47:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 7221. [2022-01-18 13:47:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7221 states, 7219 states have (on average 2.6176755783349495) internal successors, (18897), 7220 states have internal predecessors, (18897), 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) [2022-01-18 13:47:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 18897 transitions. [2022-01-18 13:47:44,072 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 18897 transitions. Word has length 101 [2022-01-18 13:47:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:44,073 INFO L470 AbstractCegarLoop]: Abstraction has 7221 states and 18897 transitions. [2022-01-18 13:47:44,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 18897 transitions. [2022-01-18 13:47:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:44,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:44,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:44,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:44,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:44,298 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 868596171, now seen corresponding path program 5 times [2022-01-18 13:47:44,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:44,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495890582] [2022-01-18 13:47:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:44,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:44,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165388344] [2022-01-18 13:47:44,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:47:44,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:44,316 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) [2022-01-18 13:47:44,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 13:47:44,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 13:47:44,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:44,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:44,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:44,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:44,598 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:44,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:44,618 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:44,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:44,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:44,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:44,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:45,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:45,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:45,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:45,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495890582] [2022-01-18 13:47:45,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:45,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165388344] [2022-01-18 13:47:45,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165388344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:45,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:45,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:45,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983226006] [2022-01-18 13:47:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:45,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:45,636 INFO L87 Difference]: Start difference. First operand 7221 states and 18897 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:46,168 INFO L93 Difference]: Finished difference Result 12140 states and 31825 transitions. [2022-01-18 13:47:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 13:47:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:46,189 INFO L225 Difference]: With dead ends: 12140 [2022-01-18 13:47:46,189 INFO L226 Difference]: Without dead ends: 12074 [2022-01-18 13:47:46,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=799, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:47:46,190 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1284 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:46,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 1843 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 247 Invalid, 0 Unknown, 428 Unchecked, 0.2s Time] [2022-01-18 13:47:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12074 states. [2022-01-18 13:47:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12074 to 7678. [2022-01-18 13:47:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7676 states have (on average 2.635617509119333) internal successors, (20231), 7677 states have internal predecessors, (20231), 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) [2022-01-18 13:47:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 20231 transitions. [2022-01-18 13:47:46,339 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 20231 transitions. Word has length 101 [2022-01-18 13:47:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 7678 states and 20231 transitions. [2022-01-18 13:47:46,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 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) [2022-01-18 13:47:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 20231 transitions. [2022-01-18 13:47:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-18 13:47:46,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:46,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:46,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:46,563 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,SelfDestructingSolverStorable10 [2022-01-18 13:47:46,563 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1448638877, now seen corresponding path program 6 times [2022-01-18 13:47:46,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353363018] [2022-01-18 13:47:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:46,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:46,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108543991] [2022-01-18 13:47:46,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:47:46,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:46,575 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) [2022-01-18 13:47:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 13:47:46,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-18 13:47:46,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:46,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:46,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:46,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:46,892 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:46,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:46,925 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:46,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:47,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:47,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:47,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:47,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-01-18 13:47:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:47,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:47,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353363018] [2022-01-18 13:47:47,440 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108543991] [2022-01-18 13:47:47,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108543991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:47,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:47,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 13:47:47,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664521161] [2022-01-18 13:47:47,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:47,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 13:47:47,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 13:47:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-18 13:47:47,441 INFO L87 Difference]: Start difference. First operand 7678 states and 20231 transitions. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 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) [2022-01-18 13:47:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:47,763 INFO L93 Difference]: Finished difference Result 10440 states and 27492 transitions. [2022-01-18 13:47:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 13:47:47,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 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 101 [2022-01-18 13:47:47,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:47,779 INFO L225 Difference]: With dead ends: 10440 [2022-01-18 13:47:47,780 INFO L226 Difference]: Without dead ends: 10362 [2022-01-18 13:47:47,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2022-01-18 13:47:47,780 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 776 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:47,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1695 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 272 Invalid, 0 Unknown, 276 Unchecked, 0.1s Time] [2022-01-18 13:47:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2022-01-18 13:47:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 8362. [2022-01-18 13:47:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8362 states, 8360 states have (on average 2.639473684210526) internal successors, (22066), 8361 states have internal predecessors, (22066), 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) [2022-01-18 13:47:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8362 states to 8362 states and 22066 transitions. [2022-01-18 13:47:47,907 INFO L78 Accepts]: Start accepts. Automaton has 8362 states and 22066 transitions. Word has length 101 [2022-01-18 13:47:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:47,907 INFO L470 AbstractCegarLoop]: Abstraction has 8362 states and 22066 transitions. [2022-01-18 13:47:47,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 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) [2022-01-18 13:47:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 8362 states and 22066 transitions. [2022-01-18 13:47:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 13:47:47,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:47,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:47,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:48,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:48,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash -48024892, now seen corresponding path program 1 times [2022-01-18 13:47:48,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:48,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273155952] [2022-01-18 13:47:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:48,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:48,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016569252] [2022-01-18 13:47:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:48,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:48,153 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) [2022-01-18 13:47:48,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 13:47:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:48,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:48,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:48,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:48,439 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:48,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:48,460 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:48,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:48,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:48,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:48,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:48,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:49,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:49,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:49,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273155952] [2022-01-18 13:47:49,580 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:49,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016569252] [2022-01-18 13:47:49,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016569252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:49,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:49,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:49,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041755168] [2022-01-18 13:47:49,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:49,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:49,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:49,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:49,581 INFO L87 Difference]: Start difference. First operand 8362 states and 22066 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 13:47:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:50,163 INFO L93 Difference]: Finished difference Result 13291 states and 35035 transitions. [2022-01-18 13:47:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 13:47:50,164 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 102 [2022-01-18 13:47:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:50,187 INFO L225 Difference]: With dead ends: 13291 [2022-01-18 13:47:50,187 INFO L226 Difference]: Without dead ends: 13276 [2022-01-18 13:47:50,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=864, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:47:50,188 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1381 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:50,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 1999 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 307 Invalid, 0 Unknown, 477 Unchecked, 0.2s Time] [2022-01-18 13:47:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13276 states. [2022-01-18 13:47:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13276 to 7725. [2022-01-18 13:47:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7725 states, 7723 states have (on average 2.6283827528162633) internal successors, (20299), 7724 states have internal predecessors, (20299), 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) [2022-01-18 13:47:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7725 states to 7725 states and 20299 transitions. [2022-01-18 13:47:50,347 INFO L78 Accepts]: Start accepts. Automaton has 7725 states and 20299 transitions. Word has length 102 [2022-01-18 13:47:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:50,347 INFO L470 AbstractCegarLoop]: Abstraction has 7725 states and 20299 transitions. [2022-01-18 13:47:50,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 13:47:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7725 states and 20299 transitions. [2022-01-18 13:47:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 13:47:50,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:50,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:50,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:50,573 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,SelfDestructingSolverStorable12 [2022-01-18 13:47:50,574 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1373063066, now seen corresponding path program 2 times [2022-01-18 13:47:50,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515068561] [2022-01-18 13:47:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:50,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:50,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:50,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942446201] [2022-01-18 13:47:50,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:47:50,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:50,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:50,587 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) [2022-01-18 13:47:50,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 13:47:50,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 13:47:50,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:47:50,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:50,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:50,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:50,867 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:50,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:50,887 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:50,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:50,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:51,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:51,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:51,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:51,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:51,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:51,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515068561] [2022-01-18 13:47:51,846 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:51,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942446201] [2022-01-18 13:47:51,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942446201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:51,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:51,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:51,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430454807] [2022-01-18 13:47:51,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:51,847 INFO L87 Difference]: Start difference. First operand 7725 states and 20299 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 13:47:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:52,329 INFO L93 Difference]: Finished difference Result 13190 states and 34764 transitions. [2022-01-18 13:47:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:47:52,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 102 [2022-01-18 13:47:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:52,346 INFO L225 Difference]: With dead ends: 13190 [2022-01-18 13:47:52,346 INFO L226 Difference]: Without dead ends: 13156 [2022-01-18 13:47:52,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=736, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 13:47:52,347 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1185 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:52,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 1924 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 0 Unknown, 434 Unchecked, 0.2s Time] [2022-01-18 13:47:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13156 states. [2022-01-18 13:47:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13156 to 7474. [2022-01-18 13:47:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 7472 states have (on average 2.6302194860813706) internal successors, (19653), 7473 states have internal predecessors, (19653), 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) [2022-01-18 13:47:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 19653 transitions. [2022-01-18 13:47:52,468 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 19653 transitions. Word has length 102 [2022-01-18 13:47:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:52,468 INFO L470 AbstractCegarLoop]: Abstraction has 7474 states and 19653 transitions. [2022-01-18 13:47:52,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 13:47:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 19653 transitions. [2022-01-18 13:47:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-18 13:47:52,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:52,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:52,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 13:47:52,683 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,SelfDestructingSolverStorable13 [2022-01-18 13:47:52,683 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1078942856, now seen corresponding path program 1 times [2022-01-18 13:47:52,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:52,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282935734] [2022-01-18 13:47:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:52,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:52,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:52,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291611545] [2022-01-18 13:47:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:52,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:52,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:52,696 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) [2022-01-18 13:47:52,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 13:47:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:47:52,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 13:47:52,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:47:52,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-18 13:47:53,042 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 13:47:53,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 13:47:53,061 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 13:47:53,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 13:47:53,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:53,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-18 13:47:53,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-18 13:47:53,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-18 13:47:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:47:54,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 13:47:54,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:47:54,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282935734] [2022-01-18 13:47:54,106 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-18 13:47:54,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291611545] [2022-01-18 13:47:54,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291611545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:47:54,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:47:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:47:54,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136015922] [2022-01-18 13:47:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:47:54,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 13:47:54,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:47:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 13:47:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 13:47:54,107 INFO L87 Difference]: Start difference. First operand 7474 states and 19653 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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) [2022-01-18 13:47:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:47:54,507 INFO L93 Difference]: Finished difference Result 9516 states and 25024 transitions. [2022-01-18 13:47:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 13:47:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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 105 [2022-01-18 13:47:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:47:54,520 INFO L225 Difference]: With dead ends: 9516 [2022-01-18 13:47:54,520 INFO L226 Difference]: Without dead ends: 9516 [2022-01-18 13:47:54,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2022-01-18 13:47:54,521 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 682 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:47:54,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1894 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 337 Invalid, 0 Unknown, 343 Unchecked, 0.1s Time] [2022-01-18 13:47:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9516 states. [2022-01-18 13:47:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 7231. [2022-01-18 13:47:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 7229 states have (on average 2.6256743671323837) internal successors, (18981), 7230 states have internal predecessors, (18981), 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) [2022-01-18 13:47:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 18981 transitions. [2022-01-18 13:47:54,621 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 18981 transitions. Word has length 105 [2022-01-18 13:47:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:47:54,621 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 18981 transitions. [2022-01-18 13:47:54,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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) [2022-01-18 13:47:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 18981 transitions. [2022-01-18 13:47:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 13:47:54,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:47:54,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:54,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:54,847 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,SelfDestructingSolverStorable14 [2022-01-18 13:47:54,847 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-18 13:47:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:47:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -21136730, now seen corresponding path program 1 times [2022-01-18 13:47:54,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:47:54,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953875112] [2022-01-18 13:47:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:54,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:47:54,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-18 13:47:54,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170626212] [2022-01-18 13:47:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:47:54,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:47:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:47:54,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 13:47:54,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 13:47:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:47:55,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:47:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:47:55,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:47:55,188 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:47:55,188 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-18 13:47:55,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-01-18 13:47:55,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2022-01-18 13:47:55,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-18 13:47:55,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-18 13:47:55,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-18 13:47:55,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 13:47:55,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 13:47:55,413 INFO L732 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:47:55,416 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:47:55,416 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:47:55,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:47:55 BasicIcfg [2022-01-18 13:47:55,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:47:55,466 INFO L158 Benchmark]: Toolchain (without parser) took 26722.40ms. Allocated memory was 390.1MB in the beginning and 960.5MB in the end (delta: 570.4MB). Free memory was 335.0MB in the beginning and 868.8MB in the end (delta: -533.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,466 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory is still 353.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:47:55,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.20ms. Allocated memory was 390.1MB in the beginning and 534.8MB in the end (delta: 144.7MB). Free memory was 334.8MB in the beginning and 498.0MB in the end (delta: -163.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.07ms. Allocated memory is still 534.8MB. Free memory was 498.0MB in the beginning and 495.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,467 INFO L158 Benchmark]: Boogie Preprocessor took 31.61ms. Allocated memory is still 534.8MB. Free memory was 495.9MB in the beginning and 493.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,469 INFO L158 Benchmark]: RCFGBuilder took 326.36ms. Allocated memory is still 534.8MB. Free memory was 493.8MB in the beginning and 474.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,469 INFO L158 Benchmark]: TraceAbstraction took 25912.63ms. Allocated memory was 534.8MB in the beginning and 960.5MB in the end (delta: 425.7MB). Free memory was 474.9MB in the beginning and 868.8MB in the end (delta: -393.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.0GB. [2022-01-18 13:47:55,470 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 390.1MB. Free memory is still 353.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 388.20ms. Allocated memory was 390.1MB in the beginning and 534.8MB in the end (delta: 144.7MB). Free memory was 334.8MB in the beginning and 498.0MB in the end (delta: -163.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.07ms. Allocated memory is still 534.8MB. Free memory was 498.0MB in the beginning and 495.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.61ms. Allocated memory is still 534.8MB. Free memory was 495.9MB in the beginning and 493.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 326.36ms. Allocated memory is still 534.8MB. Free memory was 493.8MB in the beginning and 474.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 25912.63ms. Allocated memory was 534.8MB in the beginning and 960.5MB in the end (delta: 425.7MB). Free memory was 474.9MB in the beginning and 868.8MB in the end (delta: -393.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.0GB. * 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 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; VAL [buffer={3:0}] [L683] 0 static unsigned int first; VAL [buffer={3:0}, first=0] [L684] 0 static unsigned int next; VAL [buffer={3:0}, first=0, next=0] [L685] 0 static int buffer_size; VAL [buffer={3:0}, buffer_size=0, first=0, next=0] [L686] 0 _Bool send, receive; VAL [buffer={3:0}, buffer_size=0, first=0, next=0, receive=0, send=0] [L687] 0 pthread_mutex_t m; VAL [buffer={3:0}, buffer_size=0, first=0, m={4:0}, next=0, receive=0, send=0] [L756] 0 pthread_t id1, id2; VAL [buffer={3:0}, buffer_size=0, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=0] [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] EXPR 0 next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] 0 first = next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L758] RET 0 initLog(10) [L759] 0 send=1 VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L760] 0 receive=0 VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=1, receive=0, send=1] [L723] 1 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=2, receive=0, send=1] [L739] 2 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] VAL [buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] 2 return buffer[first-1]; VAL [\result=0, buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, removeLogElement()=0, send=0] [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 25.8s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9765 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9765 mSDsluCounter, 18033 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3218 IncrementalHoareTripleChecker+Unchecked, 15401 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2350 IncrementalHoareTripleChecker+Invalid, 5778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 2957 mSDtfsCounter, 2350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1296 GetRequests, 1019 SyntacticMatches, 2 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8362occurred in iteration=12, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 34122 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 1513 NumberOfCodeBlocks, 1513 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1389 ConstructedInterpolants, 229 QuantifiedInterpolants, 18823 SizeOfPredicates, 135 NumberOfNonLiveVariables, 3101 ConjunctsInSsa, 312 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2022-01-18 13:47:55,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...