/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c1f4b5c [2019-12-17 10:52:54,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-17 10:52:54,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-17 10:52:54,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-17 10:52:54,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-17 10:52:54,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-17 10:52:54,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-17 10:52:54,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-17 10:52:54,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-17 10:52:54,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-17 10:52:54,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-17 10:52:54,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-17 10:52:54,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-17 10:52:54,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-17 10:52:54,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-17 10:52:54,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-17 10:52:54,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-17 10:52:54,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-17 10:52:54,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-17 10:52:54,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-17 10:52:54,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-17 10:52:54,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-17 10:52:54,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-17 10:52:54,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-17 10:52:54,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-17 10:52:54,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-17 10:52:54,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-17 10:52:54,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-17 10:52:54,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-17 10:52:54,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-17 10:52:54,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-17 10:52:54,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-17 10:52:54,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-17 10:52:54,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-17 10:52:54,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-17 10:52:54,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-17 10:52:54,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-17 10:52:54,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-17 10:52:54,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-17 10:52:54,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-17 10:52:54,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-17 10:52:54,615 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 [2019-12-17 10:52:54,634 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-17 10:52:54,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-17 10:52:54,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-17 10:52:54,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-17 10:52:54,636 INFO L138 SettingsManager]: * Use SBE=true [2019-12-17 10:52:54,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-17 10:52:54,636 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-17 10:52:54,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-17 10:52:54,638 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-17 10:52:54,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-17 10:52:54,639 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-17 10:52:54,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-17 10:52:54,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-17 10:52:54,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-17 10:52:54,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-17 10:52:54,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-17 10:52:54,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-17 10:52:54,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-17 10:52:54,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-17 10:52:54,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-17 10:52:54,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-17 10:52:54,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-17 10:52:54,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=FINITE_AUTOMATA [2019-12-17 10:52:54,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-17 10:52:54,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-17 10:52:54,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-17 10:52:54,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-17 10:52:54,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-17 10:52:54,938 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-17 10:52:54,939 INFO L275 PluginConnector]: CDTParser initialized [2019-12-17 10:52:54,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2019-12-17 10:52:55,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bfb1cc5/e0f7ff116dcb4f5c89c98ff92535595c/FLAGcd916e3de [2019-12-17 10:52:55,443 INFO L306 CDTParser]: Found 1 translation units. [2019-12-17 10:52:55,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2019-12-17 10:52:55,444 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:52:55,445 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:52:55,445 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2019-12-17 10:52:55,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bfb1cc5/e0f7ff116dcb4f5c89c98ff92535595c/FLAGcd916e3de [2019-12-17 10:52:55,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bfb1cc5/e0f7ff116dcb4f5c89c98ff92535595c [2019-12-17 10:52:55,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-17 10:52:55,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-17 10:52:55,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-17 10:52:55,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-17 10:52:55,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-17 10:52:55,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:52:55" (1/1) ... [2019-12-17 10:52:55,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129c53ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:55, skipping insertion in model container [2019-12-17 10:52:55,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:52:55" (1/1) ... [2019-12-17 10:52:55,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-17 10:52:55,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-17 10:52:56,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:52:56,168 INFO L203 MainTranslator]: Completed pre-run [2019-12-17 10:52:56,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-17 10:52:56,196 INFO L208 MainTranslator]: Completed translation [2019-12-17 10:52:56,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56 WrapperNode [2019-12-17 10:52:56,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-17 10:52:56,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-17 10:52:56,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-17 10:52:56,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-17 10:52:56,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-17 10:52:56,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-17 10:52:56,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-17 10:52:56,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-17 10:52:56,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... [2019-12-17 10:52:56,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-17 10:52:56,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-17 10:52:56,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-17 10:52:56,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-17 10:52:56,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-17 10:52:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-17 10:52:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-17 10:52:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-17 10:52:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-17 10:52:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2019-12-17 10:52:56,319 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2019-12-17 10:52:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2019-12-17 10:52:56,319 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2019-12-17 10:52:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-17 10:52:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-17 10:52:56,321 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-17 10:52:56,647 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-17 10:52:56,647 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-17 10:52:56,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:52:56 BoogieIcfgContainer [2019-12-17 10:52:56,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-17 10:52:56,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-17 10:52:56,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-17 10:52:56,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-17 10:52:56,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:52:55" (1/3) ... [2019-12-17 10:52:56,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c044c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:52:56, skipping insertion in model container [2019-12-17 10:52:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:52:56" (2/3) ... [2019-12-17 10:52:56,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c044c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:52:56, skipping insertion in model container [2019-12-17 10:52:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:52:56" (3/3) ... [2019-12-17 10:52:56,657 INFO L109 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2019-12-17 10:52:56,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-17 10:52:56,666 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-17 10:52:56,672 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-17 10:52:56,673 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-17 10:52:56,699 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,699 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,700 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,700 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,700 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,700 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,701 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,701 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,701 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,701 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,702 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,702 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,702 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,703 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,703 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,703 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,703 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,704 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,704 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,704 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,704 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,705 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,708 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,709 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,709 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,709 WARN L315 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,709 WARN L315 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,715 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,715 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,715 WARN L315 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,715 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,716 WARN L315 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-17 10:52:56,746 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-17 10:52:56,762 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-17 10:52:56,762 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-17 10:52:56,762 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-17 10:52:56,762 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-17 10:52:56,762 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-17 10:52:56,762 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-17 10:52:56,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-17 10:52:56,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-17 10:52:56,777 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions [2019-12-17 10:52:56,780 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions [2019-12-17 10:52:56,839 INFO L130 PetriNetUnfolder]: 5/56 cut-off events. [2019-12-17 10:52:56,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-17 10:52:56,846 INFO L76 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs. 19/70 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2019-12-17 10:52:56,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions [2019-12-17 10:52:56,870 INFO L130 PetriNetUnfolder]: 5/56 cut-off events. [2019-12-17 10:52:56,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-17 10:52:56,872 INFO L76 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs. 19/70 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2019-12-17 10:52:56,875 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 528 [2019-12-17 10:52:56,876 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-17 10:52:57,687 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-17 10:52:57,746 INFO L206 etLargeBlockEncoding]: Checked pairs total: 464 [2019-12-17 10:52:57,746 INFO L214 etLargeBlockEncoding]: Total number of compositions: 32 [2019-12-17 10:52:57,750 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 24 transitions [2019-12-17 10:52:57,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2019-12-17 10:52:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2019-12-17 10:52:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-17 10:52:57,784 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:52:57,785 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:52:57,786 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:52:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:52:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1407545813, now seen corresponding path program 1 times [2019-12-17 10:52:57,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:52:57,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830846548] [2019-12-17 10:52:57,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:52:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:52:57,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830846548] [2019-12-17 10:52:57,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:52:57,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-17 10:52:57,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025463908] [2019-12-17 10:52:58,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-17 10:52:58,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:52:58,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-17 10:52:58,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:52:58,016 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2019-12-17 10:52:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:52:58,060 INFO L93 Difference]: Finished difference Result 92 states and 203 transitions. [2019-12-17 10:52:58,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-17 10:52:58,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-12-17 10:52:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:52:58,078 INFO L225 Difference]: With dead ends: 92 [2019-12-17 10:52:58,078 INFO L226 Difference]: Without dead ends: 91 [2019-12-17 10:52:58,080 INFO L631 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 [2019-12-17 10:52:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-12-17 10:52:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2019-12-17 10:52:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-17 10:52:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2019-12-17 10:52:58,134 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 15 [2019-12-17 10:52:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:52:58,138 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2019-12-17 10:52:58,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-17 10:52:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2019-12-17 10:52:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-17 10:52:58,141 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:52:58,141 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:52:58,141 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:52:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:52:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1903898904, now seen corresponding path program 1 times [2019-12-17 10:52:58,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:52:58,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291952538] [2019-12-17 10:52:58,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:52:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:52:58,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291952538] [2019-12-17 10:52:58,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-17 10:52:58,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-17 10:52:58,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975782586] [2019-12-17 10:52:58,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-17 10:52:58,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:52:58,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-17 10:52:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-17 10:52:58,245 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 3 states. [2019-12-17 10:52:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:52:58,273 INFO L93 Difference]: Finished difference Result 110 states and 246 transitions. [2019-12-17 10:52:58,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-17 10:52:58,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-17 10:52:58,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:52:58,278 INFO L225 Difference]: With dead ends: 110 [2019-12-17 10:52:58,278 INFO L226 Difference]: Without dead ends: 110 [2019-12-17 10:52:58,279 INFO L631 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 [2019-12-17 10:52:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-12-17 10:52:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2019-12-17 10:52:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-12-17 10:52:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 211 transitions. [2019-12-17 10:52:58,302 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 211 transitions. Word has length 17 [2019-12-17 10:52:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:52:58,303 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 211 transitions. [2019-12-17 10:52:58,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-17 10:52:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 211 transitions. [2019-12-17 10:52:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-17 10:52:58,305 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:52:58,305 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:52:58,305 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:52:58,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:52:58,306 INFO L82 PathProgramCache]: Analyzing trace with hash -799047686, now seen corresponding path program 1 times [2019-12-17 10:52:58,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:52:58,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295457728] [2019-12-17 10:52:58,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:52:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:52:58,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295457728] [2019-12-17 10:52:58,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520801430] [2019-12-17 10:52:58,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:52:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:58,470 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-17 10:52:58,475 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:52:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:52:58,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:52:58,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-12-17 10:52:58,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039530149] [2019-12-17 10:52:58,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-17 10:52:58,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:52:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-17 10:52:58,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-17 10:52:58,533 INFO L87 Difference]: Start difference. First operand 95 states and 211 transitions. Second operand 7 states. [2019-12-17 10:52:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:52:58,771 INFO L93 Difference]: Finished difference Result 140 states and 315 transitions. [2019-12-17 10:52:58,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-17 10:52:58,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-17 10:52:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:52:58,773 INFO L225 Difference]: With dead ends: 140 [2019-12-17 10:52:58,773 INFO L226 Difference]: Without dead ends: 116 [2019-12-17 10:52:58,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-12-17 10:52:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-12-17 10:52:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2019-12-17 10:52:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-12-17 10:52:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2019-12-17 10:52:58,800 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 19 [2019-12-17 10:52:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:52:58,800 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2019-12-17 10:52:58,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-17 10:52:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2019-12-17 10:52:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-17 10:52:58,802 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:52:58,802 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:52:59,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:52:59,006 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:52:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:52:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1459730780, now seen corresponding path program 1 times [2019-12-17 10:52:59,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:52:59,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701993917] [2019-12-17 10:52:59,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:52:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:52:59,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701993917] [2019-12-17 10:52:59,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301654798] [2019-12-17 10:52:59,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:52:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:59,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-17 10:52:59,177 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:52:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:52:59,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:52:59,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2019-12-17 10:52:59,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481678719] [2019-12-17 10:52:59,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-17 10:52:59,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:52:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-17 10:52:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-12-17 10:52:59,228 INFO L87 Difference]: Start difference. First operand 104 states and 238 transitions. Second operand 12 states. [2019-12-17 10:52:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:52:59,644 INFO L93 Difference]: Finished difference Result 333 states and 776 transitions. [2019-12-17 10:52:59,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-17 10:52:59,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2019-12-17 10:52:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:52:59,646 INFO L225 Difference]: With dead ends: 333 [2019-12-17 10:52:59,647 INFO L226 Difference]: Without dead ends: 183 [2019-12-17 10:52:59,647 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-12-17 10:52:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-12-17 10:52:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 116. [2019-12-17 10:52:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-12-17 10:52:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 267 transitions. [2019-12-17 10:52:59,659 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 267 transitions. Word has length 21 [2019-12-17 10:52:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:52:59,659 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 267 transitions. [2019-12-17 10:52:59,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-17 10:52:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 267 transitions. [2019-12-17 10:52:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-17 10:52:59,661 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:52:59,661 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:52:59,864 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:52:59,865 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:52:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:52:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1725801454, now seen corresponding path program 2 times [2019-12-17 10:52:59,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:52:59,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667262545] [2019-12-17 10:52:59,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:52:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:52:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:52:59,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667262545] [2019-12-17 10:52:59,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431958868] [2019-12-17 10:52:59,953 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:00,010 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-17 10:53:00,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:53:00,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-17 10:53:00,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:53:00,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:00,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2019-12-17 10:53:00,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138708215] [2019-12-17 10:53:00,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-17 10:53:00,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-17 10:53:00,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-12-17 10:53:00,055 INFO L87 Difference]: Start difference. First operand 116 states and 267 transitions. Second operand 11 states. [2019-12-17 10:53:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:00,382 INFO L93 Difference]: Finished difference Result 309 states and 721 transitions. [2019-12-17 10:53:00,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-17 10:53:00,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-12-17 10:53:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:00,384 INFO L225 Difference]: With dead ends: 309 [2019-12-17 10:53:00,385 INFO L226 Difference]: Without dead ends: 287 [2019-12-17 10:53:00,385 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2019-12-17 10:53:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2019-12-17 10:53:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 172. [2019-12-17 10:53:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-17 10:53:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 413 transitions. [2019-12-17 10:53:00,398 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 413 transitions. Word has length 23 [2019-12-17 10:53:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:00,399 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 413 transitions. [2019-12-17 10:53:00,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-17 10:53:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 413 transitions. [2019-12-17 10:53:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-17 10:53:00,401 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:53:00,401 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:53:00,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:00,612 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:53:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:53:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2031243548, now seen corresponding path program 3 times [2019-12-17 10:53:00,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:53:00,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487354323] [2019-12-17 10:53:00,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:53:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:53:00,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487354323] [2019-12-17 10:53:00,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662108039] [2019-12-17 10:53:00,705 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:00,750 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-17 10:53:00,751 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:53:00,751 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-17 10:53:00,753 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-17 10:53:00,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:00,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-17 10:53:00,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592541294] [2019-12-17 10:53:00,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-17 10:53:00,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:00,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-17 10:53:00,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-12-17 10:53:00,788 INFO L87 Difference]: Start difference. First operand 172 states and 413 transitions. Second operand 11 states. [2019-12-17 10:53:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:01,023 INFO L93 Difference]: Finished difference Result 353 states and 832 transitions. [2019-12-17 10:53:01,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-17 10:53:01,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2019-12-17 10:53:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:01,025 INFO L225 Difference]: With dead ends: 353 [2019-12-17 10:53:01,025 INFO L226 Difference]: Without dead ends: 181 [2019-12-17 10:53:01,026 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-17 10:53:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-12-17 10:53:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 124. [2019-12-17 10:53:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-12-17 10:53:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 285 transitions. [2019-12-17 10:53:01,033 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 285 transitions. Word has length 25 [2019-12-17 10:53:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:01,034 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 285 transitions. [2019-12-17 10:53:01,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-17 10:53:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 285 transitions. [2019-12-17 10:53:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-17 10:53:01,035 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:53:01,036 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:53:01,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:01,245 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:53:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:53:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash 717660324, now seen corresponding path program 4 times [2019-12-17 10:53:01,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:53:01,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346177973] [2019-12-17 10:53:01,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:53:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:53:01,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346177973] [2019-12-17 10:53:01,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308243298] [2019-12-17 10:53:01,298 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:01,331 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-17 10:53:01,331 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:53:01,332 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-17 10:53:01,333 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-17 10:53:01,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:01,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-12-17 10:53:01,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841496950] [2019-12-17 10:53:01,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-17 10:53:01,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:01,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-17 10:53:01,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-17 10:53:01,359 INFO L87 Difference]: Start difference. First operand 124 states and 285 transitions. Second operand 8 states. [2019-12-17 10:53:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:01,392 INFO L93 Difference]: Finished difference Result 142 states and 328 transitions. [2019-12-17 10:53:01,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-17 10:53:01,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-12-17 10:53:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:01,395 INFO L225 Difference]: With dead ends: 142 [2019-12-17 10:53:01,395 INFO L226 Difference]: Without dead ends: 142 [2019-12-17 10:53:01,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-17 10:53:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-12-17 10:53:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2019-12-17 10:53:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-12-17 10:53:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 328 transitions. [2019-12-17 10:53:01,404 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 328 transitions. Word has length 25 [2019-12-17 10:53:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:01,406 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 328 transitions. [2019-12-17 10:53:01,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-17 10:53:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 328 transitions. [2019-12-17 10:53:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-17 10:53:01,409 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:53:01,409 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:53:01,609 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:01,610 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:53:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:53:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1554416694, now seen corresponding path program 5 times [2019-12-17 10:53:01,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:53:01,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352275152] [2019-12-17 10:53:01,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:53:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:53:01,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352275152] [2019-12-17 10:53:01,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463677301] [2019-12-17 10:53:01,667 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:01,702 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-17 10:53:01,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:53:01,703 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-17 10:53:01,704 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:53:01,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:01,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-17 10:53:01,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779211606] [2019-12-17 10:53:01,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-17 10:53:01,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-17 10:53:01,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-17 10:53:01,714 INFO L87 Difference]: Start difference. First operand 142 states and 328 transitions. Second operand 5 states. [2019-12-17 10:53:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:01,729 INFO L93 Difference]: Finished difference Result 257 states and 601 transitions. [2019-12-17 10:53:01,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-17 10:53:01,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-12-17 10:53:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:01,732 INFO L225 Difference]: With dead ends: 257 [2019-12-17 10:53:01,732 INFO L226 Difference]: Without dead ends: 257 [2019-12-17 10:53:01,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-17 10:53:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-12-17 10:53:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 198. [2019-12-17 10:53:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-12-17 10:53:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 463 transitions. [2019-12-17 10:53:01,740 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 463 transitions. Word has length 27 [2019-12-17 10:53:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:01,740 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 463 transitions. [2019-12-17 10:53:01,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-17 10:53:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 463 transitions. [2019-12-17 10:53:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-17 10:53:01,742 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:53:01,742 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:53:01,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:01,947 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:53:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:53:01,947 INFO L82 PathProgramCache]: Analyzing trace with hash -652689143, now seen corresponding path program 6 times [2019-12-17 10:53:01,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:53:01,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62917215] [2019-12-17 10:53:01,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:53:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:53:02,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62917215] [2019-12-17 10:53:02,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608498747] [2019-12-17 10:53:02,003 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:02,055 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-17 10:53:02,055 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-17 10:53:02,056 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-17 10:53:02,058 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-17 10:53:02,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:02,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2019-12-17 10:53:02,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679848800] [2019-12-17 10:53:02,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-17 10:53:02,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:02,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-17 10:53:02,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-17 10:53:02,102 INFO L87 Difference]: Start difference. First operand 198 states and 463 transitions. Second operand 10 states. [2019-12-17 10:53:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:02,306 INFO L93 Difference]: Finished difference Result 673 states and 1603 transitions. [2019-12-17 10:53:02,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-17 10:53:02,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-12-17 10:53:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:02,311 INFO L225 Difference]: With dead ends: 673 [2019-12-17 10:53:02,311 INFO L226 Difference]: Without dead ends: 616 [2019-12-17 10:53:02,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2019-12-17 10:53:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-12-17 10:53:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 345. [2019-12-17 10:53:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-12-17 10:53:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 837 transitions. [2019-12-17 10:53:02,326 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 837 transitions. Word has length 29 [2019-12-17 10:53:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:02,326 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 837 transitions. [2019-12-17 10:53:02,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-17 10:53:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 837 transitions. [2019-12-17 10:53:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-17 10:53:02,328 INFO L403 BasicCegarLoop]: Found error trace [2019-12-17 10:53:02,328 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-17 10:53:02,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:02,531 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-12-17 10:53:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-17 10:53:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1968192520, now seen corresponding path program 7 times [2019-12-17 10:53:02,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-17 10:53:02,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251968387] [2019-12-17 10:53:02,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-17 10:53:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-17 10:53:02,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251968387] [2019-12-17 10:53:02,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426315833] [2019-12-17 10:53:02,615 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-17 10:53:02,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-17 10:53:02,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-17 10:53:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-17 10:53:02,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-17 10:53:02,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-12-17 10:53:02,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020350897] [2019-12-17 10:53:02,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-17 10:53:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-17 10:53:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-17 10:53:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-12-17 10:53:02,706 INFO L87 Difference]: Start difference. First operand 345 states and 837 transitions. Second operand 13 states. [2019-12-17 10:53:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-17 10:53:02,973 INFO L93 Difference]: Finished difference Result 719 states and 1726 transitions. [2019-12-17 10:53:02,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-17 10:53:02,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2019-12-17 10:53:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-17 10:53:02,974 INFO L225 Difference]: With dead ends: 719 [2019-12-17 10:53:02,974 INFO L226 Difference]: Without dead ends: 0 [2019-12-17 10:53:02,975 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2019-12-17 10:53:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-17 10:53:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-17 10:53:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-17 10:53:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-17 10:53:02,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-12-17 10:53:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-17 10:53:02,976 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-17 10:53:02,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-17 10:53:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-17 10:53:02,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-17 10:53:03,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-17 10:53:03,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:53:03 BasicIcfg [2019-12-17 10:53:03,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-17 10:53:03,183 INFO L168 Benchmark]: Toolchain (without parser) took 7320.54 ms. Allocated memory was 137.9 MB in the beginning and 276.8 MB in the end (delta: 138.9 MB). Free memory was 100.1 MB in the beginning and 149.6 MB in the end (delta: -49.5 MB). Peak memory consumption was 89.4 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,184 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.65 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 180.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 178.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,187 INFO L168 Benchmark]: Boogie Preprocessor took 24.57 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 177.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,188 INFO L168 Benchmark]: RCFGBuilder took 389.84 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 161.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,189 INFO L168 Benchmark]: TraceAbstraction took 6530.52 ms. Allocated memory was 202.9 MB in the beginning and 276.8 MB in the end (delta: 73.9 MB). Free memory was 160.5 MB in the beginning and 149.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2019-12-17 10:53:03,193 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.65 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 180.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 178.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.57 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 177.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.84 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 161.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6530.52 ms. Allocated memory was 202.9 MB in the beginning and 276.8 MB in the end (delta: 73.9 MB). Free memory was 160.5 MB in the beginning and 149.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 57 ProgramPointsBefore, 26 ProgramPointsAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 233 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 464 CheckedPairsTotal, 32 TotalNumberOfCompositions - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Result: SAFE, OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 346 SDtfs, 875 SDslu, 1182 SDs, 0 SdLazy, 794 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 607 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 432 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 26030 SizeOfPredicates, 20 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 150/281 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...