/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 22:02:49,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 22:02:49,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 22:02:49,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 22:02:49,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 22:02:49,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 22:02:49,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 22:02:49,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 22:02:49,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 22:02:49,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 22:02:49,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 22:02:49,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 22:02:49,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 22:02:49,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 22:02:49,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 22:02:49,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 22:02:49,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 22:02:49,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 22:02:49,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 22:02:49,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 22:02:49,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 22:02:49,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 22:02:49,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 22:02:49,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 22:02:49,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 22:02:49,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 22:02:49,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 22:02:49,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 22:02:49,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 22:02:49,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 22:02:49,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 22:02:49,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 22:02:49,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 22:02:49,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 22:02:49,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 22:02:49,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 22:02:49,704 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-SemanticLbe.epf [2020-11-11 22:02:49,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 22:02:49,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 22:02:49,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 22:02:49,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 22:02:49,738 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 22:02:49,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 22:02:49,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 22:02:49,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 22:02:49,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 22:02:49,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 22:02:49,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 22:02:49,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 22:02:49,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 22:02:49,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 22:02:49,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 22:02:49,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 22:02:49,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 22:02:49,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 22:02:49,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 22:02:49,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 22:02:49,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 22:02:49,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 22:02:49,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 22:02:49,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 22:02:49,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 22:02:49,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 22:02:49,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 22:02:49,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 22:02:49,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 22:02:50,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 22:02:50,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 22:02:50,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 22:02:50,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 22:02:50,215 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 22:02:50,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-11 22:02:50,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3a185ca/e9e323563d9240af802f7f02319de075/FLAGe8e85e1d2 [2020-11-11 22:02:51,264 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 22:02:51,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-11-11 22:02:51,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3a185ca/e9e323563d9240af802f7f02319de075/FLAGe8e85e1d2 [2020-11-11 22:02:51,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3a185ca/e9e323563d9240af802f7f02319de075 [2020-11-11 22:02:51,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 22:02:51,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 22:02:51,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 22:02:51,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 22:02:51,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 22:02:51,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 10:02:51" (1/1) ... [2020-11-11 22:02:51,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab9cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:51, skipping insertion in model container [2020-11-11 22:02:51,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 10:02:51" (1/1) ... [2020-11-11 22:02:51,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 22:02:51,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 22:02:51,838 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-11 22:02:52,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 22:02:52,127 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 22:02:52,159 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-11 22:02:52,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 22:02:52,341 INFO L208 MainTranslator]: Completed translation [2020-11-11 22:02:52,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52 WrapperNode [2020-11-11 22:02:52,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 22:02:52,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 22:02:52,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 22:02:52,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 22:02:52,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 22:02:52,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 22:02:52,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 22:02:52,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 22:02:52,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (1/1) ... [2020-11-11 22:02:52,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 22:02:52,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 22:02:52,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 22:02:52,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 22:02:52,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (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 [2020-11-11 22:02:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-11 22:02:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-11 22:02:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 22:02:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 22:02:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 22:02:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 22:02:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 22:02:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 22:02:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 22:02:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 22:02:52,629 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 22:02:53,491 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 22:02:53,491 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-11 22:02:53,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 10:02:53 BoogieIcfgContainer [2020-11-11 22:02:53,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 22:02:53,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 22:02:53,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 22:02:53,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 22:02:53,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 10:02:51" (1/3) ... [2020-11-11 22:02:53,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542300e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 10:02:53, skipping insertion in model container [2020-11-11 22:02:53,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 10:02:52" (2/3) ... [2020-11-11 22:02:53,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542300e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 10:02:53, skipping insertion in model container [2020-11-11 22:02:53,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 10:02:53" (3/3) ... [2020-11-11 22:02:53,508 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-11-11 22:02:53,531 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 22:02:53,531 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 22:02:53,538 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-11 22:02:53,539 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 22:02:53,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,586 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,587 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,588 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,589 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,589 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,589 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,590 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,590 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,590 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,593 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 22:02:53,616 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 22:02:53,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 22:02:53,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 22:02:53,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 22:02:53,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 22:02:53,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 22:02:53,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 22:02:53,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 22:02:53,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 22:02:53,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 22:02:53,679 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 22:02:53,682 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 118 transitions, 241 flow [2020-11-11 22:02:53,686 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 118 transitions, 241 flow [2020-11-11 22:02:53,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 118 transitions, 241 flow [2020-11-11 22:02:53,752 INFO L129 PetriNetUnfolder]: 26/117 cut-off events. [2020-11-11 22:02:53,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 22:02:53,761 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 255 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. [2020-11-11 22:02:53,768 INFO L116 LiptonReduction]: Number of co-enabled transitions 4950 [2020-11-11 22:02:56,983 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-11 22:02:57,156 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-11 22:02:57,586 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 22:02:57,692 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-11 22:02:57,929 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 22:02:58,039 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-11 22:02:58,080 INFO L131 LiptonReduction]: Checked pairs total: 13073 [2020-11-11 22:02:58,080 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-11 22:02:58,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 59 transitions, 123 flow [2020-11-11 22:02:58,128 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 402 states, 398 states have (on average 2.819095477386935) internal successors, (1122), 401 states have internal predecessors, (1122), 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) [2020-11-11 22:02:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 398 states have (on average 2.819095477386935) internal successors, (1122), 401 states have internal predecessors, (1122), 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) [2020-11-11 22:02:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-11 22:02:58,142 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:58,143 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-11 22:02:58,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:58,152 INFO L82 PathProgramCache]: Analyzing trace with hash 15643830, now seen corresponding path program 1 times [2020-11-11 22:02:58,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:58,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705237985] [2020-11-11 22:02:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:58,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705237985] [2020-11-11 22:02:58,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:58,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 22:02:58,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693942219] [2020-11-11 22:02:58,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 22:02:58,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 22:02:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 22:02:58,384 INFO L87 Difference]: Start difference. First operand has 402 states, 398 states have (on average 2.819095477386935) internal successors, (1122), 401 states have internal predecessors, (1122), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-11 22:02:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:58,424 INFO L93 Difference]: Finished difference Result 402 states and 1002 transitions. [2020-11-11 22:02:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 22:02:58,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-11 22:02:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:58,450 INFO L225 Difference]: With dead ends: 402 [2020-11-11 22:02:58,450 INFO L226 Difference]: Without dead ends: 393 [2020-11-11 22:02:58,452 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 [2020-11-11 22:02:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-11-11 22:02:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2020-11-11 22:02:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 390 states have (on average 2.523076923076923) internal successors, (984), 392 states have internal predecessors, (984), 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) [2020-11-11 22:02:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 984 transitions. [2020-11-11 22:02:58,555 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 984 transitions. Word has length 4 [2020-11-11 22:02:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:58,556 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 984 transitions. [2020-11-11 22:02:58,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-11 22:02:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 984 transitions. [2020-11-11 22:02:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 22:02:58,558 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:58,558 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:58,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 22:02:58,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1834006859, now seen corresponding path program 1 times [2020-11-11 22:02:58,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:58,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437928458] [2020-11-11 22:02:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:58,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437928458] [2020-11-11 22:02:58,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:58,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 22:02:58,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843204905] [2020-11-11 22:02:58,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 22:02:58,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 22:02:58,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 22:02:58,680 INFO L87 Difference]: Start difference. First operand 393 states and 984 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 22:02:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:58,797 INFO L93 Difference]: Finished difference Result 389 states and 960 transitions. [2020-11-11 22:02:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 22:02:58,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-11 22:02:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:58,808 INFO L225 Difference]: With dead ends: 389 [2020-11-11 22:02:58,809 INFO L226 Difference]: Without dead ends: 341 [2020-11-11 22:02:58,812 INFO L749 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 [2020-11-11 22:02:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-11 22:02:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 335. [2020-11-11 22:02:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 332 states have (on average 2.539156626506024) internal successors, (843), 334 states have internal predecessors, (843), 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) [2020-11-11 22:02:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 843 transitions. [2020-11-11 22:02:58,877 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 843 transitions. Word has length 9 [2020-11-11 22:02:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:58,877 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 843 transitions. [2020-11-11 22:02:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 22:02:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 843 transitions. [2020-11-11 22:02:58,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 22:02:58,885 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:58,885 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:58,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 22:02:58,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash -597382859, now seen corresponding path program 1 times [2020-11-11 22:02:58,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:58,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016890175] [2020-11-11 22:02:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016890175] [2020-11-11 22:02:59,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 22:02:59,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799691155] [2020-11-11 22:02:59,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 22:02:59,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 22:02:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 22:02:59,033 INFO L87 Difference]: Start difference. First operand 335 states and 843 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 22:02:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,082 INFO L93 Difference]: Finished difference Result 321 states and 804 transitions. [2020-11-11 22:02:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 22:02:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-11 22:02:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,086 INFO L225 Difference]: With dead ends: 321 [2020-11-11 22:02:59,087 INFO L226 Difference]: Without dead ends: 273 [2020-11-11 22:02:59,087 INFO L749 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 [2020-11-11 22:02:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-11 22:02:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2020-11-11 22:02:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 2.5608856088560885) internal successors, (694), 272 states have internal predecessors, (694), 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) [2020-11-11 22:02:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 694 transitions. [2020-11-11 22:02:59,125 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 694 transitions. Word has length 9 [2020-11-11 22:02:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,125 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 694 transitions. [2020-11-11 22:02:59,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2020-11-11 22:02:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 694 transitions. [2020-11-11 22:02:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 22:02:59,136 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,136 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 22:02:59,137 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1224924390, now seen corresponding path program 1 times [2020-11-11 22:02:59,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197624519] [2020-11-11 22:02:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197624519] [2020-11-11 22:02:59,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 22:02:59,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128718382] [2020-11-11 22:02:59,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 22:02:59,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 22:02:59,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 22:02:59,277 INFO L87 Difference]: Start difference. First operand 273 states and 694 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,455 INFO L93 Difference]: Finished difference Result 580 states and 1412 transitions. [2020-11-11 22:02:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 22:02:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2020-11-11 22:02:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,460 INFO L225 Difference]: With dead ends: 580 [2020-11-11 22:02:59,460 INFO L226 Difference]: Without dead ends: 307 [2020-11-11 22:02:59,461 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 [2020-11-11 22:02:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-11 22:02:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 294. [2020-11-11 22:02:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 2.4760273972602738) internal successors, (723), 293 states have internal predecessors, (723), 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) [2020-11-11 22:02:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 723 transitions. [2020-11-11 22:02:59,475 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 723 transitions. Word has length 15 [2020-11-11 22:02:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,476 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 723 transitions. [2020-11-11 22:02:59,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 723 transitions. [2020-11-11 22:02:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 22:02:59,478 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,479 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 22:02:59,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1885613146, now seen corresponding path program 2 times [2020-11-11 22:02:59,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720826125] [2020-11-11 22:02:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720826125] [2020-11-11 22:02:59,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 22:02:59,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024954785] [2020-11-11 22:02:59,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 22:02:59,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 22:02:59,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 22:02:59,529 INFO L87 Difference]: Start difference. First operand 294 states and 723 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,562 INFO L93 Difference]: Finished difference Result 430 states and 1001 transitions. [2020-11-11 22:02:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 22:02:59,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2020-11-11 22:02:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,567 INFO L225 Difference]: With dead ends: 430 [2020-11-11 22:02:59,568 INFO L226 Difference]: Without dead ends: 427 [2020-11-11 22:02:59,569 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 [2020-11-11 22:02:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-11 22:02:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 329. [2020-11-11 22:02:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 327 states have (on average 2.4648318042813457) internal successors, (806), 328 states have internal predecessors, (806), 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) [2020-11-11 22:02:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 806 transitions. [2020-11-11 22:02:59,588 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 806 transitions. Word has length 15 [2020-11-11 22:02:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,588 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 806 transitions. [2020-11-11 22:02:59,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 806 transitions. [2020-11-11 22:02:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 22:02:59,591 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,591 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 22:02:59,591 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash -244670310, now seen corresponding path program 3 times [2020-11-11 22:02:59,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873025355] [2020-11-11 22:02:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873025355] [2020-11-11 22:02:59,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 22:02:59,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703865271] [2020-11-11 22:02:59,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 22:02:59,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 22:02:59,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 22:02:59,633 INFO L87 Difference]: Start difference. First operand 329 states and 806 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,654 INFO L93 Difference]: Finished difference Result 365 states and 798 transitions. [2020-11-11 22:02:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 22:02:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2020-11-11 22:02:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,659 INFO L225 Difference]: With dead ends: 365 [2020-11-11 22:02:59,660 INFO L226 Difference]: Without dead ends: 361 [2020-11-11 22:02:59,660 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 [2020-11-11 22:02:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-11-11 22:02:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 291. [2020-11-11 22:02:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 2.2802768166089966) internal successors, (659), 290 states have internal predecessors, (659), 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) [2020-11-11 22:02:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 659 transitions. [2020-11-11 22:02:59,677 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 659 transitions. Word has length 15 [2020-11-11 22:02:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,678 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 659 transitions. [2020-11-11 22:02:59,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 659 transitions. [2020-11-11 22:02:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 22:02:59,679 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,679 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 22:02:59,680 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2046164130, now seen corresponding path program 4 times [2020-11-11 22:02:59,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512087767] [2020-11-11 22:02:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512087767] [2020-11-11 22:02:59,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 22:02:59,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244737226] [2020-11-11 22:02:59,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 22:02:59,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 22:02:59,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 22:02:59,718 INFO L87 Difference]: Start difference. First operand 291 states and 659 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,787 INFO L93 Difference]: Finished difference Result 242 states and 500 transitions. [2020-11-11 22:02:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 22:02:59,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2020-11-11 22:02:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,789 INFO L225 Difference]: With dead ends: 242 [2020-11-11 22:02:59,790 INFO L226 Difference]: Without dead ends: 156 [2020-11-11 22:02:59,790 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 [2020-11-11 22:02:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-11 22:02:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 124. [2020-11-11 22:02:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.9672131147540983) internal successors, (240), 123 states have internal predecessors, (240), 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) [2020-11-11 22:02:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 240 transitions. [2020-11-11 22:02:59,798 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 240 transitions. Word has length 15 [2020-11-11 22:02:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,798 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 240 transitions. [2020-11-11 22:02:59,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2020-11-11 22:02:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 240 transitions. [2020-11-11 22:02:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-11 22:02:59,800 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,800 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 22:02:59,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash -650370624, now seen corresponding path program 1 times [2020-11-11 22:02:59,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012955261] [2020-11-11 22:02:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012955261] [2020-11-11 22:02:59,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 22:02:59,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478707170] [2020-11-11 22:02:59,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 22:02:59,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 22:02:59,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 22:02:59,858 INFO L87 Difference]: Start difference. First operand 124 states and 240 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2020-11-11 22:02:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,884 INFO L93 Difference]: Finished difference Result 119 states and 230 transitions. [2020-11-11 22:02:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 22:02:59,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2020-11-11 22:02:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,886 INFO L225 Difference]: With dead ends: 119 [2020-11-11 22:02:59,887 INFO L226 Difference]: Without dead ends: 97 [2020-11-11 22:02:59,887 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 [2020-11-11 22:02:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-11 22:02:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-11 22:02:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.9684210526315788) internal successors, (187), 96 states have internal predecessors, (187), 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) [2020-11-11 22:02:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 187 transitions. [2020-11-11 22:02:59,894 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 187 transitions. Word has length 19 [2020-11-11 22:02:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,894 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 187 transitions. [2020-11-11 22:02:59,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2020-11-11 22:02:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 187 transitions. [2020-11-11 22:02:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-11 22:02:59,895 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 22:02:59,896 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 22:02:59,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 22:02:59,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 22:02:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 22:02:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash -496168432, now seen corresponding path program 1 times [2020-11-11 22:02:59,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 22:02:59,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431905691] [2020-11-11 22:02:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 22:02:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 22:02:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 22:02:59,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431905691] [2020-11-11 22:02:59,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 22:02:59,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 22:02:59,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408828350] [2020-11-11 22:02:59,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 22:02:59,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 22:02:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 22:02:59,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 22:02:59,945 INFO L87 Difference]: Start difference. First operand 97 states and 187 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2020-11-11 22:02:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 22:02:59,978 INFO L93 Difference]: Finished difference Result 76 states and 157 transitions. [2020-11-11 22:02:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 22:02:59,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2020-11-11 22:02:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 22:02:59,979 INFO L225 Difference]: With dead ends: 76 [2020-11-11 22:02:59,979 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 22:02:59,980 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 [2020-11-11 22:02:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 22:02:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 22:02:59,981 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) [2020-11-11 22:02:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 22:02:59,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-11 22:02:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 22:02:59,982 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 22:02:59,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2020-11-11 22:02:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 22:02:59,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 22:02:59,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 22:02:59,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 10:02:59 BasicIcfg [2020-11-11 22:02:59,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 22:02:59,990 INFO L168 Benchmark]: Toolchain (without parser) took 8484.15 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 281.6 MB in the beginning and 172.6 MB in the end (delta: 109.0 MB). Peak memory consumption was 173.1 MB. Max. memory is 16.0 GB. [2020-11-11 22:02:59,991 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 276.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 22:02:59,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.02 ms. Allocated memory is still 306.2 MB. Free memory was 280.9 MB in the beginning and 251.3 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 22:02:59,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.70 ms. Allocated memory is still 306.2 MB. Free memory was 251.1 MB in the beginning and 249.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 22:02:59,994 INFO L168 Benchmark]: Boogie Preprocessor took 45.34 ms. Allocated memory is still 306.2 MB. Free memory was 249.2 MB in the beginning and 247.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 22:02:59,995 INFO L168 Benchmark]: RCFGBuilder took 1038.02 ms. Allocated memory is still 306.2 MB. Free memory was 247.6 MB in the beginning and 262.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-11-11 22:02:59,997 INFO L168 Benchmark]: TraceAbstraction took 6491.39 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 262.4 MB in the beginning and 172.6 MB in the end (delta: 89.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 16.0 GB. [2020-11-11 22:03:00,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 306.2 MB. Free memory is still 276.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 828.02 ms. Allocated memory is still 306.2 MB. Free memory was 280.9 MB in the beginning and 251.3 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.70 ms. Allocated memory is still 306.2 MB. Free memory was 251.1 MB in the beginning and 249.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 45.34 ms. Allocated memory is still 306.2 MB. Free memory was 249.2 MB in the beginning and 247.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1038.02 ms. Allocated memory is still 306.2 MB. Free memory was 247.6 MB in the beginning and 262.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6491.39 ms. Allocated memory was 306.2 MB in the beginning and 369.1 MB in the end (delta: 62.9 MB). Free memory was 262.4 MB in the beginning and 172.6 MB in the end (delta: 89.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3111 VarBasedMoverChecksPositive, 130 VarBasedMoverChecksNegative, 67 SemBasedMoverChecksPositive, 63 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 537 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 96 PlacesBefore, 45 PlacesAfterwards, 118 TransitionsBefore, 59 TransitionsAfterwards, 4950 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 8 ChoiceCompositions, 90 TotalNumberOfCompositions, 13073 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: 6.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 543 SDtfs, 260 SDslu, 390 SDs, 0 SdLazy, 124 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 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, 219 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, 2677 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...