/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 10:10:54,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 10:10:54,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 10:10:54,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 10:10:54,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 10:10:54,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 10:10:54,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 10:10:54,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 10:10:54,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 10:10:54,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 10:10:54,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 10:10:54,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 10:10:54,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 10:10:54,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 10:10:54,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 10:10:54,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 10:10:54,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 10:10:54,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 10:10:54,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 10:10:54,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 10:10:54,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 10:10:54,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 10:10:54,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 10:10:54,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 10:10:54,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 10:10:54,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 10:10:54,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 10:10:54,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 10:10:54,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 10:10:54,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 10:10:54,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 10:10:54,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 10:10:54,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 10:10:54,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 10:10:54,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 10:10:54,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 10:10:54,367 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-New_States.epf [2020-11-12 10:10:54,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 10:10:54,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 10:10:54,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 10:10:54,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 10:10:54,428 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 10:10:54,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 10:10:54,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 10:10:54,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 10:10:54,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 10:10:54,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 10:10:54,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 10:10:54,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 10:10:54,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 10:10:54,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 10:10:54,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 10:10:54,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 10:10:54,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 10:10:54,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 10:10:54,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 10:10:54,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 10:10:54,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 10:10:54,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 10:10:54,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 10:10:54,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 10:10:54,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 10:10:54,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 10:10:54,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 10:10:54,435 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 10:10:54,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 10:10:54,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 10:10:54,435 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 10:10:54,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 10:10:54,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 10:10:54,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 10:10:54,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 10:10:54,900 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 10:10:54,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-12 10:10:54,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c9db9e6/62f1e22cd3214ae583680f23521886a3/FLAGd2fedba98 [2020-11-12 10:10:55,801 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 10:10:55,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-12 10:10:55,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c9db9e6/62f1e22cd3214ae583680f23521886a3/FLAGd2fedba98 [2020-11-12 10:10:56,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c9db9e6/62f1e22cd3214ae583680f23521886a3 [2020-11-12 10:10:56,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 10:10:56,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 10:10:56,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 10:10:56,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 10:10:56,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 10:10:56,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f916d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56, skipping insertion in model container [2020-11-12 10:10:56,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 10:10:56,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 10:10:56,381 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 10:10:56,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 10:10:56,637 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 10:10:56,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 10:10:56,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 10:10:56,767 INFO L208 MainTranslator]: Completed translation [2020-11-12 10:10:56,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56 WrapperNode [2020-11-12 10:10:56,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 10:10:56,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 10:10:56,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 10:10:56,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 10:10:56,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 10:10:56,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 10:10:56,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 10:10:56,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 10:10:56,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... [2020-11-12 10:10:56,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 10:10:56,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 10:10:56,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 10:10:56,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 10:10:56,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 10:10:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-12 10:10:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-12 10:10:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 10:10:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 10:10:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 10:10:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 10:10:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 10:10:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 10:10:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 10:10:57,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 10:10:57,015 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 10:10:57,651 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 10:10:57,652 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-12 10:10:57,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:10:57 BoogieIcfgContainer [2020-11-12 10:10:57,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 10:10:57,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 10:10:57,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 10:10:57,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 10:10:57,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:10:56" (1/3) ... [2020-11-12 10:10:57,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d78fae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:10:57, skipping insertion in model container [2020-11-12 10:10:57,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:10:56" (2/3) ... [2020-11-12 10:10:57,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d78fae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:10:57, skipping insertion in model container [2020-11-12 10:10:57,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:10:57" (3/3) ... [2020-11-12 10:10:57,668 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-11-12 10:10:57,685 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 10:10:57,685 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 10:10:57,690 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-12 10:10:57,691 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 10:10:57,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 10:10:57,771 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 10:10:57,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 10:10:57,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 10:10:57,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 10:10:57,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 10:10:57,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 10:10:57,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 10:10:57,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 10:10:57,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 10:10:57,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 10:10:57,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 118 transitions, 241 flow [2020-11-12 10:10:57,924 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1436 states, 1432 states have (on average 2.630586592178771) internal successors, (3767), 1435 states have internal predecessors, (3767), 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) [2020-11-12 10:11:07,126 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 9199ms [2020-11-12 10:11:07,131 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1436 states, 1432 states have (on average 2.630586592178771) internal successors, (3767), 1435 states have internal predecessors, (3767), 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) [2020-11-12 10:11:08,325 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 730516 states, 672272 states have (on average 1.3394786633981484) internal successors, (900494), 730515 states have internal predecessors, (900494), 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) [2020-11-12 10:11:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 730516 states, 672272 states have (on average 1.3394786633981484) internal successors, (900494), 730515 states have internal predecessors, (900494), 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) [2020-11-12 10:11:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-12 10:11:08,844 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:08,846 INFO L494 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] [2020-11-12 10:11:08,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash 737851913, now seen corresponding path program 1 times [2020-11-12 10:11:08,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:08,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885213469] [2020-11-12 10:11:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:09,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885213469] [2020-11-12 10:11:09,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:09,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 10:11:09,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710824413] [2020-11-12 10:11:09,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 10:11:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:09,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 10:11:09,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 10:11:09,517 INFO L87 Difference]: Start difference. First operand has 730516 states, 672272 states have (on average 1.3394786633981484) internal successors, (900494), 730515 states have internal predecessors, (900494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2020-11-12 10:11:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:10,048 INFO L93 Difference]: Finished difference Result 64593 states and 80103 transitions. [2020-11-12 10:11:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 10:11:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2020-11-12 10:11:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:10,270 INFO L225 Difference]: With dead ends: 64593 [2020-11-12 10:11:10,271 INFO L226 Difference]: Without dead ends: 36935 [2020-11-12 10:11:10,272 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 10:11:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36935 states. [2020-11-12 10:11:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36935 to 1582. [2020-11-12 10:11:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1528 states have (on average 1.3854712041884816) internal successors, (2117), 1581 states have internal predecessors, (2117), 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) [2020-11-12 10:11:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2117 transitions. [2020-11-12 10:11:11,682 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2117 transitions. Word has length 24 [2020-11-12 10:11:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:11,683 INFO L481 AbstractCegarLoop]: Abstraction has 1582 states and 2117 transitions. [2020-11-12 10:11:11,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2020-11-12 10:11:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2117 transitions. [2020-11-12 10:11:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-12 10:11:11,700 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:11,700 INFO L494 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] [2020-11-12 10:11:11,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 10:11:11,700 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash -865018822, now seen corresponding path program 1 times [2020-11-12 10:11:11,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:11,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208227549] [2020-11-12 10:11:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:11,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208227549] [2020-11-12 10:11:11,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:11,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 10:11:11,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65226243] [2020-11-12 10:11:11,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 10:11:11,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 10:11:11,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 10:11:12,000 INFO L87 Difference]: Start difference. First operand 1582 states and 2117 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2020-11-12 10:11:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:12,282 INFO L93 Difference]: Finished difference Result 1411 states and 1905 transitions. [2020-11-12 10:11:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 10:11:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2020-11-12 10:11:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:12,287 INFO L225 Difference]: With dead ends: 1411 [2020-11-12 10:11:12,287 INFO L226 Difference]: Without dead ends: 1082 [2020-11-12 10:11:12,293 INFO L749 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 [2020-11-12 10:11:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-11-12 10:11:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1053. [2020-11-12 10:11:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1022 states have (on average 1.3796477495107633) internal successors, (1410), 1052 states have internal predecessors, (1410), 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) [2020-11-12 10:11:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1410 transitions. [2020-11-12 10:11:12,338 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1410 transitions. Word has length 32 [2020-11-12 10:11:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:12,339 INFO L481 AbstractCegarLoop]: Abstraction has 1053 states and 1410 transitions. [2020-11-12 10:11:12,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2020-11-12 10:11:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1410 transitions. [2020-11-12 10:11:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-12 10:11:12,341 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:12,341 INFO L494 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] [2020-11-12 10:11:12,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 10:11:12,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1665292008, now seen corresponding path program 1 times [2020-11-12 10:11:12,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:12,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284257017] [2020-11-12 10:11:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:12,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284257017] [2020-11-12 10:11:12,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:12,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 10:11:12,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430610039] [2020-11-12 10:11:12,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 10:11:12,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 10:11:12,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 10:11:12,454 INFO L87 Difference]: Start difference. First operand 1053 states and 1410 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2020-11-12 10:11:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:12,500 INFO L93 Difference]: Finished difference Result 953 states and 1283 transitions. [2020-11-12 10:11:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 10:11:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2020-11-12 10:11:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:12,504 INFO L225 Difference]: With dead ends: 953 [2020-11-12 10:11:12,504 INFO L226 Difference]: Without dead ends: 619 [2020-11-12 10:11:12,504 INFO L749 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 [2020-11-12 10:11:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-11-12 10:11:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 613. [2020-11-12 10:11:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 606 states have (on average 1.3498349834983498) internal successors, (818), 612 states have internal predecessors, (818), 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) [2020-11-12 10:11:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 818 transitions. [2020-11-12 10:11:12,527 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 818 transitions. Word has length 36 [2020-11-12 10:11:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:12,528 INFO L481 AbstractCegarLoop]: Abstraction has 613 states and 818 transitions. [2020-11-12 10:11:12,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2020-11-12 10:11:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 818 transitions. [2020-11-12 10:11:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 10:11:12,533 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:12,534 INFO L494 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] [2020-11-12 10:11:12,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 10:11:12,534 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:12,535 INFO L82 PathProgramCache]: Analyzing trace with hash -576828733, now seen corresponding path program 1 times [2020-11-12 10:11:12,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:12,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780060565] [2020-11-12 10:11:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:12,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780060565] [2020-11-12 10:11:12,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:12,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:12,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534620888] [2020-11-12 10:11:12,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:12,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:12,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:12,659 INFO L87 Difference]: Start difference. First operand 613 states and 818 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:12,776 INFO L93 Difference]: Finished difference Result 757 states and 932 transitions. [2020-11-12 10:11:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 10:11:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2020-11-12 10:11:12,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:12,778 INFO L225 Difference]: With dead ends: 757 [2020-11-12 10:11:12,779 INFO L226 Difference]: Without dead ends: 514 [2020-11-12 10:11:12,779 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-11-12 10:11:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 492. [2020-11-12 10:11:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 485 states have (on average 1.2536082474226804) internal successors, (608), 491 states have internal predecessors, (608), 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) [2020-11-12 10:11:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 608 transitions. [2020-11-12 10:11:12,794 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 608 transitions. Word has length 47 [2020-11-12 10:11:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:12,797 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 608 transitions. [2020-11-12 10:11:12,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 608 transitions. [2020-11-12 10:11:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 10:11:12,799 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:12,802 INFO L494 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] [2020-11-12 10:11:12,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 10:11:12,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash -227915151, now seen corresponding path program 1 times [2020-11-12 10:11:12,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:12,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989656675] [2020-11-12 10:11:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:12,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989656675] [2020-11-12 10:11:12,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735417159] [2020-11-12 10:11:12,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:12,896 INFO L87 Difference]: Start difference. First operand 492 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:12,957 INFO L93 Difference]: Finished difference Result 1427 states and 1756 transitions. [2020-11-12 10:11:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 10:11:12,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2020-11-12 10:11:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:12,962 INFO L225 Difference]: With dead ends: 1427 [2020-11-12 10:11:12,962 INFO L226 Difference]: Without dead ends: 1427 [2020-11-12 10:11:12,963 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2020-11-12 10:11:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 536. [2020-11-12 10:11:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 529 states have (on average 1.274102079395085) internal successors, (674), 535 states have internal predecessors, (674), 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) [2020-11-12 10:11:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 674 transitions. [2020-11-12 10:11:12,987 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 674 transitions. Word has length 47 [2020-11-12 10:11:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:12,988 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 674 transitions. [2020-11-12 10:11:12,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 674 transitions. [2020-11-12 10:11:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 10:11:12,990 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:12,990 INFO L494 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] [2020-11-12 10:11:12,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 10:11:12,991 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:12,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash -398274937, now seen corresponding path program 2 times [2020-11-12 10:11:12,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:12,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4075480] [2020-11-12 10:11:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:13,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4075480] [2020-11-12 10:11:13,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:13,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:13,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980084320] [2020-11-12 10:11:13,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:13,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:13,064 INFO L87 Difference]: Start difference. First operand 536 states and 674 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:13,121 INFO L93 Difference]: Finished difference Result 1226 states and 1482 transitions. [2020-11-12 10:11:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 10:11:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2020-11-12 10:11:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:13,125 INFO L225 Difference]: With dead ends: 1226 [2020-11-12 10:11:13,126 INFO L226 Difference]: Without dead ends: 1226 [2020-11-12 10:11:13,126 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-11-12 10:11:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 557. [2020-11-12 10:11:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 550 states have (on average 1.270909090909091) internal successors, (699), 556 states have internal predecessors, (699), 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) [2020-11-12 10:11:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 699 transitions. [2020-11-12 10:11:13,151 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 699 transitions. Word has length 47 [2020-11-12 10:11:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:13,153 INFO L481 AbstractCegarLoop]: Abstraction has 557 states and 699 transitions. [2020-11-12 10:11:13,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 699 transitions. [2020-11-12 10:11:13,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 10:11:13,156 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:13,157 INFO L494 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] [2020-11-12 10:11:13,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 10:11:13,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:13,158 INFO L82 PathProgramCache]: Analyzing trace with hash -835181829, now seen corresponding path program 3 times [2020-11-12 10:11:13,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:13,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818581127] [2020-11-12 10:11:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:13,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818581127] [2020-11-12 10:11:13,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:13,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:13,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694579672] [2020-11-12 10:11:13,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:13,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:13,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:13,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:13,235 INFO L87 Difference]: Start difference. First operand 557 states and 699 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:13,329 INFO L93 Difference]: Finished difference Result 695 states and 833 transitions. [2020-11-12 10:11:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 10:11:13,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2020-11-12 10:11:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:13,331 INFO L225 Difference]: With dead ends: 695 [2020-11-12 10:11:13,331 INFO L226 Difference]: Without dead ends: 246 [2020-11-12 10:11:13,332 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-11-12 10:11:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 215. [2020-11-12 10:11:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.1442307692307692) internal successors, (238), 214 states have internal predecessors, (238), 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) [2020-11-12 10:11:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 238 transitions. [2020-11-12 10:11:13,339 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 238 transitions. Word has length 47 [2020-11-12 10:11:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:13,340 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 238 transitions. [2020-11-12 10:11:13,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2020-11-12 10:11:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 238 transitions. [2020-11-12 10:11:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-12 10:11:13,341 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:13,341 INFO L494 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] [2020-11-12 10:11:13,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 10:11:13,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2002569434, now seen corresponding path program 1 times [2020-11-12 10:11:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:13,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334565330] [2020-11-12 10:11:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:13,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334565330] [2020-11-12 10:11:13,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:13,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:13,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568502607] [2020-11-12 10:11:13,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:13,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:13,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:13,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:13,405 INFO L87 Difference]: Start difference. First operand 215 states and 238 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2020-11-12 10:11:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:13,435 INFO L93 Difference]: Finished difference Result 254 states and 271 transitions. [2020-11-12 10:11:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 10:11:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2020-11-12 10:11:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:13,437 INFO L225 Difference]: With dead ends: 254 [2020-11-12 10:11:13,437 INFO L226 Difference]: Without dead ends: 233 [2020-11-12 10:11:13,437 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-11-12 10:11:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 193. [2020-11-12 10:11:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.1344086021505377) internal successors, (211), 192 states have internal predecessors, (211), 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) [2020-11-12 10:11:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2020-11-12 10:11:13,445 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 52 [2020-11-12 10:11:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:13,445 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2020-11-12 10:11:13,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2020-11-12 10:11:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2020-11-12 10:11:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-12 10:11:13,446 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 10:11:13,446 INFO L494 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] [2020-11-12 10:11:13,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 10:11:13,447 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 10:11:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 10:11:13,447 INFO L82 PathProgramCache]: Analyzing trace with hash -295009576, now seen corresponding path program 1 times [2020-11-12 10:11:13,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 10:11:13,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961786125] [2020-11-12 10:11:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 10:11:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 10:11:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 10:11:13,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961786125] [2020-11-12 10:11:13,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 10:11:13,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 10:11:13,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990358255] [2020-11-12 10:11:13,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 10:11:13,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 10:11:13,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 10:11:13,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 10:11:13,528 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2020-11-12 10:11:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 10:11:13,544 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-11-12 10:11:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 10:11:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2020-11-12 10:11:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 10:11:13,545 INFO L225 Difference]: With dead ends: 76 [2020-11-12 10:11:13,545 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 10:11:13,546 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 10:11:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 10:11:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 10:11:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2020-11-12 10:11:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 10:11:13,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-11-12 10:11:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 10:11:13,547 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 10:11:13,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2020-11-12 10:11:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 10:11:13,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 10:11:13,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 10:11:13,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:11:13 BasicIcfg [2020-11-12 10:11:13,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 10:11:13,558 INFO L168 Benchmark]: Toolchain (without parser) took 17468.88 ms. Allocated memory was 302.0 MB in the beginning and 11.8 GB in the end (delta: 11.5 GB). Free memory was 277.7 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.0 GB. [2020-11-12 10:11:13,559 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 10:11:13,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.93 ms. Allocated memory is still 302.0 MB. Free memory was 277.0 MB in the beginning and 247.3 MB in the end (delta: 29.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 10:11:13,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.90 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 245.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 10:11:13,561 INFO L168 Benchmark]: Boogie Preprocessor took 49.70 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 10:11:13,565 INFO L168 Benchmark]: RCFGBuilder took 779.24 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 259.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-11-12 10:11:13,567 INFO L168 Benchmark]: TraceAbstraction took 15895.31 ms. Allocated memory was 302.0 MB in the beginning and 11.8 GB in the end (delta: 11.5 GB). Free memory was 258.5 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.0 GB. [2020-11-12 10:11:13,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 669.93 ms. Allocated memory is still 302.0 MB. Free memory was 277.0 MB in the beginning and 247.3 MB in the end (delta: 29.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.90 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 245.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 49.70 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 779.24 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 259.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15895.31 ms. Allocated memory was 302.0 MB in the beginning and 11.8 GB in the end (delta: 11.5 GB). Free memory was 258.5 MB in the beginning and 10.3 GB in the end (delta: -10.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.5s, HoareTripleCheckerStatistics: 1090 SDtfs, 605 SDslu, 1234 SDs, 0 SdLazy, 153 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730516occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 37041 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 21537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 correct! Received shutdown request...