/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:11:18,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:11:18,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:11:19,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:11:19,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:11:19,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:11:19,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:11:19,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:11:19,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:11:19,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:11:19,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:11:19,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:11:19,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:11:19,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:11:19,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:11:19,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:11:19,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:11:19,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:11:19,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:11:19,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:11:19,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:11:19,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:11:19,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:11:19,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:11:19,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:11:19,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:11:19,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:11:19,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:11:19,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:11:19,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:11:19,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:11:19,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:11:19,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:11:19,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:11:19,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:11:19,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:11:19,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:11:19,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:11:19,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:11:19,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:11:19,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:11:19,112 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:11:19,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:11:19,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:11:19,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:11:19,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:11:19,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:11:19,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:11:19,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:11:19,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:11:19,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:11:19,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:11:19,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:11:19,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:11:19,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:11:19,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:11:19,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:11:19,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:11:19,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:11:19,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:11:19,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:11:19,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:11:19,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:11:19,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:11:19,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:11:19,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:11:19,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:11:19,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:11:19,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:11:19,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:11:19,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:11:19,542 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:11:19,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-09 12:11:19,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7e4b1ce/251cabd2335b4de5bcbb7c34d5700f1e/FLAGe75938c28 [2020-11-09 12:11:20,299 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:11:20,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-09 12:11:20,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7e4b1ce/251cabd2335b4de5bcbb7c34d5700f1e/FLAGe75938c28 [2020-11-09 12:11:20,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7e4b1ce/251cabd2335b4de5bcbb7c34d5700f1e [2020-11-09 12:11:20,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:11:20,563 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:11:20,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:11:20,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:11:20,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:11:20,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:11:20" (1/1) ... [2020-11-09 12:11:20,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd2c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:20, skipping insertion in model container [2020-11-09 12:11:20,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:11:20" (1/1) ... [2020-11-09 12:11:20,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:11:20,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:11:20,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 12:11:20,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:11:20,987 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:11:21,005 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 12:11:21,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:11:21,212 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:11:21,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21 WrapperNode [2020-11-09 12:11:21,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:11:21,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:11:21,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:11:21,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:11:21,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:11:21,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:11:21,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:11:21,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:11:21,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (1/1) ... [2020-11-09 12:11:21,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:11:21,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:11:21,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:11:21,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:11:21,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (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 [2020-11-09 12:11:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 12:11:21,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 12:11:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:11:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:11:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:11:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:11:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:11:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:11:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:11:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:11:21,482 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:11:22,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:11:22,070 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-09 12:11:22,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:11:22 BoogieIcfgContainer [2020-11-09 12:11:22,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:11:22,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:11:22,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:11:22,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:11:22,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:11:20" (1/3) ... [2020-11-09 12:11:22,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c319dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:11:22, skipping insertion in model container [2020-11-09 12:11:22,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:11:21" (2/3) ... [2020-11-09 12:11:22,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c319dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:11:22, skipping insertion in model container [2020-11-09 12:11:22,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:11:22" (3/3) ... [2020-11-09 12:11:22,087 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-11-09 12:11:22,105 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:11:22,105 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:11:22,111 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 12:11:22,112 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:11:22,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:11:22,199 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:11:22,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:11:22,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:11:22,250 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:11:22,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:11:22,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:11:22,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:11:22,251 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:11:22,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:11:22,251 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:11:22,275 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:11:22,278 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 118 transitions, 241 flow [2020-11-09 12:11:22,282 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 118 transitions, 241 flow [2020-11-09 12:11:22,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 118 transitions, 241 flow [2020-11-09 12:11:22,370 INFO L129 PetriNetUnfolder]: 26/117 cut-off events. [2020-11-09 12:11:22,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:11:22,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 117 events. 26/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 100. Up to 5 conditions per place. [2020-11-09 12:11:22,385 INFO L116 LiptonReduction]: Number of co-enabled transitions 4950 [2020-11-09 12:11:24,949 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-09 12:11:25,155 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-09 12:11:25,478 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-09 12:11:25,798 WARN L194 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-09 12:11:25,919 INFO L131 LiptonReduction]: Checked pairs total: 13295 [2020-11-09 12:11:25,919 INFO L133 LiptonReduction]: Total number of compositions: 91 [2020-11-09 12:11:25,926 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 59 transitions, 123 flow [2020-11-09 12:11:25,956 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 402 states. [2020-11-09 12:11:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states. [2020-11-09 12:11:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 12:11:25,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:25,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 12:11:25,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 15673652, now seen corresponding path program 1 times [2020-11-09 12:11:25,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:25,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705237985] [2020-11-09 12:11:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:26,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705237985] [2020-11-09 12:11:26,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:26,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:11:26,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828857525] [2020-11-09 12:11:26,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:11:26,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:26,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:11:26,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:11:26,208 INFO L87 Difference]: Start difference. First operand 402 states. Second operand 2 states. [2020-11-09 12:11:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:26,266 INFO L93 Difference]: Finished difference Result 402 states and 1002 transitions. [2020-11-09 12:11:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:11:26,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-09 12:11:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:26,296 INFO L225 Difference]: With dead ends: 402 [2020-11-09 12:11:26,297 INFO L226 Difference]: Without dead ends: 393 [2020-11-09 12:11:26,298 INFO L677 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 [2020-11-09 12:11:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-11-09 12:11:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2020-11-09 12:11:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-09 12:11:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 984 transitions. [2020-11-09 12:11:26,386 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 984 transitions. Word has length 4 [2020-11-09 12:11:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:26,386 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 984 transitions. [2020-11-09 12:11:26,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:11:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 984 transitions. [2020-11-09 12:11:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:11:26,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:26,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:26,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:11:26,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1634562799, now seen corresponding path program 1 times [2020-11-09 12:11:26,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:26,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023206419] [2020-11-09 12:11:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:26,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023206419] [2020-11-09 12:11:26,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:26,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:11:26,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843204905] [2020-11-09 12:11:26,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:26,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:26,537 INFO L87 Difference]: Start difference. First operand 393 states and 984 transitions. Second operand 3 states. [2020-11-09 12:11:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:26,607 INFO L93 Difference]: Finished difference Result 389 states and 960 transitions. [2020-11-09 12:11:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:26,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 12:11:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:26,612 INFO L225 Difference]: With dead ends: 389 [2020-11-09 12:11:26,612 INFO L226 Difference]: Without dead ends: 341 [2020-11-09 12:11:26,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-09 12:11:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 335. [2020-11-09 12:11:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-11-09 12:11:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 843 transitions. [2020-11-09 12:11:26,659 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 843 transitions. Word has length 9 [2020-11-09 12:11:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:26,660 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 843 transitions. [2020-11-09 12:11:26,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 843 transitions. [2020-11-09 12:11:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:11:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:26,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:26,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:11:26,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash 87609182, now seen corresponding path program 1 times [2020-11-09 12:11:26,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:26,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016890175] [2020-11-09 12:11:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:26,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016890175] [2020-11-09 12:11:26,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:26,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:11:26,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799691155] [2020-11-09 12:11:26,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:26,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:26,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:26,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:26,747 INFO L87 Difference]: Start difference. First operand 335 states and 843 transitions. Second operand 3 states. [2020-11-09 12:11:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:26,781 INFO L93 Difference]: Finished difference Result 321 states and 804 transitions. [2020-11-09 12:11:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:26,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 12:11:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:26,785 INFO L225 Difference]: With dead ends: 321 [2020-11-09 12:11:26,786 INFO L226 Difference]: Without dead ends: 273 [2020-11-09 12:11:26,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-09 12:11:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2020-11-09 12:11:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-11-09 12:11:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 694 transitions. [2020-11-09 12:11:26,804 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 694 transitions. Word has length 9 [2020-11-09 12:11:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:26,805 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 694 transitions. [2020-11-09 12:11:26,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 694 transitions. [2020-11-09 12:11:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:11:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:26,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:26,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:11:26,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:26,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1962295688, now seen corresponding path program 1 times [2020-11-09 12:11:26,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:26,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197624519] [2020-11-09 12:11:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:26,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197624519] [2020-11-09 12:11:26,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:26,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:26,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566655866] [2020-11-09 12:11:26,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:26,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:26,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:26,918 INFO L87 Difference]: Start difference. First operand 273 states and 694 transitions. Second operand 3 states. [2020-11-09 12:11:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:26,994 INFO L93 Difference]: Finished difference Result 496 states and 1226 transitions. [2020-11-09 12:11:26,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:26,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-09 12:11:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:26,997 INFO L225 Difference]: With dead ends: 496 [2020-11-09 12:11:26,997 INFO L226 Difference]: Without dead ends: 335 [2020-11-09 12:11:26,999 INFO L677 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 [2020-11-09 12:11:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-11-09 12:11:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 322. [2020-11-09 12:11:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-11-09 12:11:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 794 transitions. [2020-11-09 12:11:27,018 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 794 transitions. Word has length 15 [2020-11-09 12:11:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,019 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 794 transitions. [2020-11-09 12:11:27,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 794 transitions. [2020-11-09 12:11:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:11:27,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:27,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:27,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:11:27,021 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1219231776, now seen corresponding path program 2 times [2020-11-09 12:11:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:27,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355665160] [2020-11-09 12:11:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355665160] [2020-11-09 12:11:27,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:27,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:27,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958854163] [2020-11-09 12:11:27,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:27,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:27,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:27,064 INFO L87 Difference]: Start difference. First operand 322 states and 794 transitions. Second operand 3 states. [2020-11-09 12:11:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:27,082 INFO L93 Difference]: Finished difference Result 464 states and 1079 transitions. [2020-11-09 12:11:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:27,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-09 12:11:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:27,087 INFO L225 Difference]: With dead ends: 464 [2020-11-09 12:11:27,087 INFO L226 Difference]: Without dead ends: 455 [2020-11-09 12:11:27,087 INFO L677 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 [2020-11-09 12:11:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-11-09 12:11:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 357. [2020-11-09 12:11:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-11-09 12:11:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 877 transitions. [2020-11-09 12:11:27,121 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 877 transitions. Word has length 15 [2020-11-09 12:11:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,122 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 877 transitions. [2020-11-09 12:11:27,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 877 transitions. [2020-11-09 12:11:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:11:27,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:27,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:27,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:11:27,123 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:27,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1003883118, now seen corresponding path program 3 times [2020-11-09 12:11:27,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:27,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832156473] [2020-11-09 12:11:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:27,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832156473] [2020-11-09 12:11:27,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:27,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:27,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486523222] [2020-11-09 12:11:27,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:27,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:27,164 INFO L87 Difference]: Start difference. First operand 357 states and 877 transitions. Second operand 3 states. [2020-11-09 12:11:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:27,202 INFO L93 Difference]: Finished difference Result 377 states and 825 transitions. [2020-11-09 12:11:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:27,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-09 12:11:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:27,209 INFO L225 Difference]: With dead ends: 377 [2020-11-09 12:11:27,209 INFO L226 Difference]: Without dead ends: 369 [2020-11-09 12:11:27,209 INFO L677 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 [2020-11-09 12:11:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-11-09 12:11:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 299. [2020-11-09 12:11:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-11-09 12:11:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 677 transitions. [2020-11-09 12:11:27,225 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 677 transitions. Word has length 15 [2020-11-09 12:11:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 677 transitions. [2020-11-09 12:11:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 677 transitions. [2020-11-09 12:11:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:11:27,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:27,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:27,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:11:27,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:27,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1841211242, now seen corresponding path program 4 times [2020-11-09 12:11:27,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:27,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819555660] [2020-11-09 12:11:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:27,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819555660] [2020-11-09 12:11:27,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:27,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:27,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195870355] [2020-11-09 12:11:27,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:27,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:27,290 INFO L87 Difference]: Start difference. First operand 299 states and 677 transitions. Second operand 3 states. [2020-11-09 12:11:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:27,346 INFO L93 Difference]: Finished difference Result 250 states and 518 transitions. [2020-11-09 12:11:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:27,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-09 12:11:27,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:27,348 INFO L225 Difference]: With dead ends: 250 [2020-11-09 12:11:27,349 INFO L226 Difference]: Without dead ends: 164 [2020-11-09 12:11:27,349 INFO L677 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 [2020-11-09 12:11:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-09 12:11:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2020-11-09 12:11:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-09 12:11:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 244 transitions. [2020-11-09 12:11:27,357 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 244 transitions. Word has length 15 [2020-11-09 12:11:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,358 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 244 transitions. [2020-11-09 12:11:27,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 244 transitions. [2020-11-09 12:11:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 12:11:27,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:27,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:27,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:11:27,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1626905937, now seen corresponding path program 1 times [2020-11-09 12:11:27,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:27,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216630658] [2020-11-09 12:11:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:27,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216630658] [2020-11-09 12:11:27,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:27,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:11:27,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748867972] [2020-11-09 12:11:27,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:27,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:27,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:27,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:27,428 INFO L87 Difference]: Start difference. First operand 124 states and 244 transitions. Second operand 4 states. [2020-11-09 12:11:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:27,455 INFO L93 Difference]: Finished difference Result 119 states and 234 transitions. [2020-11-09 12:11:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:11:27,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-09 12:11:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:27,457 INFO L225 Difference]: With dead ends: 119 [2020-11-09 12:11:27,457 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:11:27,457 INFO L677 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 [2020-11-09 12:11:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:11:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:11:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:11:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 191 transitions. [2020-11-09 12:11:27,463 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 191 transitions. Word has length 19 [2020-11-09 12:11:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,464 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 191 transitions. [2020-11-09 12:11:27,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 191 transitions. [2020-11-09 12:11:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 12:11:27,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:27,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:27,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:11:27,466 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1299323923, now seen corresponding path program 1 times [2020-11-09 12:11:27,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:27,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320892382] [2020-11-09 12:11:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:27,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320892382] [2020-11-09 12:11:27,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:27,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:11:27,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183655820] [2020-11-09 12:11:27,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:27,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:27,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:27,528 INFO L87 Difference]: Start difference. First operand 97 states and 191 transitions. Second operand 4 states. [2020-11-09 12:11:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:27,548 INFO L93 Difference]: Finished difference Result 76 states and 161 transitions. [2020-11-09 12:11:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:11:27,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-09 12:11:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:27,548 INFO L225 Difference]: With dead ends: 76 [2020-11-09 12:11:27,549 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:11:27,549 INFO L677 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 [2020-11-09 12:11:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:11:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:11:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:11:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:11:27,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-09 12:11:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:27,551 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:11:27,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:11:27,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:11:27,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:11:27,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:11:27 BasicIcfg [2020-11-09 12:11:27,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:11:27,556 INFO L168 Benchmark]: Toolchain (without parser) took 6999.95 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 134.2 MB in the beginning and 178.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,557 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:11:27,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.21 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 141.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.40 ms. Allocated memory is still 159.4 MB. Free memory was 141.0 MB in the beginning and 138.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,559 INFO L168 Benchmark]: Boogie Preprocessor took 64.48 ms. Allocated memory is still 159.4 MB. Free memory was 138.9 MB in the beginning and 137.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,559 INFO L168 Benchmark]: RCFGBuilder took 677.42 ms. Allocated memory is still 159.4 MB. Free memory was 137.4 MB in the beginning and 112.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,560 INFO L168 Benchmark]: TraceAbstraction took 5475.09 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 112.2 MB in the beginning and 178.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:27,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 647.21 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 141.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 103.40 ms. Allocated memory is still 159.4 MB. Free memory was 141.0 MB in the beginning and 138.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.48 ms. Allocated memory is still 159.4 MB. Free memory was 138.9 MB in the beginning and 137.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 677.42 ms. Allocated memory is still 159.4 MB. Free memory was 137.4 MB in the beginning and 112.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5475.09 ms. Allocated memory was 159.4 MB in the beginning and 243.3 MB in the end (delta: 83.9 MB). Free memory was 112.2 MB in the beginning and 178.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3265 VarBasedMoverChecksPositive, 129 VarBasedMoverChecksNegative, 61 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 603 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 96 PlacesBefore, 45 PlacesAfterwards, 118 TransitionsBefore, 59 TransitionsAfterwards, 4950 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 8 ChoiceCompositions, 91 TotalNumberOfCompositions, 13295 MoverChecksTotal - 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: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 526 SDtfs, 234 SDslu, 335 SDs, 0 SdLazy, 96 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=402occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 227 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 2741 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...