/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 13:04:09,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:04:09,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:04:09,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:04:09,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:04:09,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:04:09,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:04:09,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:04:09,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:04:09,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:04:09,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:04:09,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:04:09,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:04:09,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:04:09,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:04:09,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:04:09,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:04:09,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:04:09,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:04:09,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:04:09,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:04:09,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:04:09,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:04:09,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:04:09,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 13:04:09,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 13:04:09,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 13:04:09,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 13:04:09,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 13:04:09,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 13:04:09,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:04:09,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:04:09,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:04:09,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:04:09,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:04:09,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:04:09,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:04:09,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:04:09,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:04:09,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:04:09,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:04:09,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 13:04:09,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:04:09,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:04:09,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:04:09,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:04:09,786 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:04:09,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:04:09,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:04:09,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:04:09,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:04:09,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:04:09,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:04:09,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:04:09,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:04:09,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:04:09,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:04:09,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:04:09,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:04:09,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:04:09,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:04:09,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:04:09,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:04:09,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:04:09,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:04:09,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:04:09,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:04:09,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:04:09,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:04:09,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:04:09,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:04:09,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:04:10,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:04:10,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:04:10,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:04:10,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:04:10,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:04:10,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-09 13:04:10,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c94e7bba/86e94203b3974ccb9e4997643fc18998/FLAGbfefb566a [2020-10-09 13:04:10,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:04:10,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-09 13:04:10,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c94e7bba/86e94203b3974ccb9e4997643fc18998/FLAGbfefb566a [2020-10-09 13:04:11,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c94e7bba/86e94203b3974ccb9e4997643fc18998 [2020-10-09 13:04:11,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:04:11,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:04:11,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:11,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:04:11,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:04:11,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6df5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11, skipping insertion in model container [2020-10-09 13:04:11,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:04:11,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:04:11,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:11,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:04:11,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:11,705 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:04:11,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11 WrapperNode [2020-10-09 13:04:11,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:11,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:11,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:04:11,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:04:11,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:11,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:04:11,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:04:11,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:04:11,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:04:11,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:04:11,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:04:11,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:04:11,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (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 [2020-10-09 13:04:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:04:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 13:04:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:04:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:04:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 13:04:11,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 13:04:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 13:04:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 13:04:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 13:04:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 13:04:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 13:04:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 13:04:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 13:04:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:04:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:04:11,865 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:04:12,215 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:04:12,215 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 13:04:12,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:12 BoogieIcfgContainer [2020-10-09 13:04:12,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:04:12,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:04:12,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:04:12,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:04:12,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:04:11" (1/3) ... [2020-10-09 13:04:12,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc47fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:12, skipping insertion in model container [2020-10-09 13:04:12,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (2/3) ... [2020-10-09 13:04:12,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc47fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:12, skipping insertion in model container [2020-10-09 13:04:12,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:12" (3/3) ... [2020-10-09 13:04:12,226 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-10-09 13:04:12,238 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:04:12,238 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:04:12,254 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:04:12,258 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:04:12,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,309 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,309 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,309 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,309 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,310 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,310 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,310 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,310 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,311 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,311 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,323 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,323 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:12,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 13:04:12,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:04:12,373 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:04:12,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:04:12,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:04:12,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:04:12,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:04:12,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:04:12,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:04:12,390 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:04:12,393 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:12,396 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:12,398 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:12,453 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 13:04:12,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 13:04:12,465 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 13:04:12,473 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-09 13:04:14,093 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-09 13:04:14,186 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-09 13:04:14,187 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-09 13:04:14,193 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-09 13:04:14,298 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-09 13:04:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-09 13:04:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 13:04:14,325 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,326 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,327 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-09 13:04:14,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000870834] [2020-10-09 13:04:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000870834] [2020-10-09 13:04:14,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:14,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:14,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236932074] [2020-10-09 13:04:14,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 13:04:14,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 13:04:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 13:04:14,554 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-09 13:04:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:14,619 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-09 13:04:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 13:04:14,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-09 13:04:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,676 INFO L225 Difference]: With dead ends: 1450 [2020-10-09 13:04:14,676 INFO L226 Difference]: Without dead ends: 1194 [2020-10-09 13:04:14,678 INFO L673 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 [2020-10-09 13:04:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-09 13:04:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-09 13:04:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-09 13:04:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-09 13:04:14,841 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-09 13:04:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,842 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-09 13:04:14,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 13:04:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-09 13:04:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 13:04:14,854 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,854 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:04:14,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-09 13:04:14,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487802877] [2020-10-09 13:04:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487802877] [2020-10-09 13:04:15,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:15,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777579826] [2020-10-09 13:04:15,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:15,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:15,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:15,014 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-09 13:04:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,059 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-09 13:04:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:15,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 13:04:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,070 INFO L225 Difference]: With dead ends: 1322 [2020-10-09 13:04:15,070 INFO L226 Difference]: Without dead ends: 1066 [2020-10-09 13:04:15,071 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-09 13:04:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-09 13:04:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-09 13:04:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-09 13:04:15,117 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-09 13:04:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,117 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-09 13:04:15,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-09 13:04:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 13:04:15,119 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,120 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 13:04:15,120 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-10-09 13:04:15,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839288738] [2020-10-09 13:04:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839288738] [2020-10-09 13:04:15,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:15,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305273973] [2020-10-09 13:04:15,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:15,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:15,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:15,216 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-09 13:04:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,255 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-09 13:04:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:15,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-09 13:04:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,263 INFO L225 Difference]: With dead ends: 1162 [2020-10-09 13:04:15,264 INFO L226 Difference]: Without dead ends: 970 [2020-10-09 13:04:15,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-09 13:04:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-09 13:04:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-09 13:04:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-09 13:04:15,301 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-09 13:04:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,302 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-09 13:04:15,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-09 13:04:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:04:15,304 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,304 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 13:04:15,304 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,305 INFO L82 PathProgramCache]: Analyzing trace with hash -121660302, now seen corresponding path program 1 times [2020-10-09 13:04:15,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798794991] [2020-10-09 13:04:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798794991] [2020-10-09 13:04:15,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690089386] [2020-10-09 13:04:15,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,430 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-09 13:04:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,481 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-10-09 13:04:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:04:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,487 INFO L225 Difference]: With dead ends: 1162 [2020-10-09 13:04:15,487 INFO L226 Difference]: Without dead ends: 634 [2020-10-09 13:04:15,487 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-09 13:04:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-10-09 13:04:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-09 13:04:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2052 transitions. [2020-10-09 13:04:15,508 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2052 transitions. Word has length 13 [2020-10-09 13:04:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,509 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 2052 transitions. [2020-10-09 13:04:15,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2052 transitions. [2020-10-09 13:04:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:04:15,511 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,511 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 13:04:15,511 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,512 INFO L82 PathProgramCache]: Analyzing trace with hash -952650144, now seen corresponding path program 1 times [2020-10-09 13:04:15,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350736601] [2020-10-09 13:04:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350736601] [2020-10-09 13:04:15,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501340638] [2020-10-09 13:04:15,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,576 INFO L87 Difference]: Start difference. First operand 634 states and 2052 transitions. Second operand 5 states. [2020-10-09 13:04:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,626 INFO L93 Difference]: Finished difference Result 850 states and 2690 transitions. [2020-10-09 13:04:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 13:04:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,630 INFO L225 Difference]: With dead ends: 850 [2020-10-09 13:04:15,631 INFO L226 Difference]: Without dead ends: 394 [2020-10-09 13:04:15,631 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-09 13:04:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-09 13:04:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-09 13:04:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1168 transitions. [2020-10-09 13:04:15,646 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1168 transitions. Word has length 15 [2020-10-09 13:04:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,647 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1168 transitions. [2020-10-09 13:04:15,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1168 transitions. [2020-10-09 13:04:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:04:15,649 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,649 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 13:04:15,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,650 INFO L82 PathProgramCache]: Analyzing trace with hash 120484504, now seen corresponding path program 1 times [2020-10-09 13:04:15,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997534427] [2020-10-09 13:04:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997534427] [2020-10-09 13:04:15,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:15,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750207960] [2020-10-09 13:04:15,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:15,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:15,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:15,702 INFO L87 Difference]: Start difference. First operand 394 states and 1168 transitions. Second operand 4 states. [2020-10-09 13:04:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,724 INFO L93 Difference]: Finished difference Result 418 states and 1208 transitions. [2020-10-09 13:04:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:15,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-09 13:04:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,728 INFO L225 Difference]: With dead ends: 418 [2020-10-09 13:04:15,728 INFO L226 Difference]: Without dead ends: 370 [2020-10-09 13:04:15,729 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-09 13:04:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-10-09 13:04:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-09 13:04:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1080 transitions. [2020-10-09 13:04:15,743 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1080 transitions. Word has length 16 [2020-10-09 13:04:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,743 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1080 transitions. [2020-10-09 13:04:15,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1080 transitions. [2020-10-09 13:04:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:04:15,745 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,745 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 13:04:15,746 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,746 INFO L82 PathProgramCache]: Analyzing trace with hash 263975146, now seen corresponding path program 1 times [2020-10-09 13:04:15,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101659574] [2020-10-09 13:04:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101659574] [2020-10-09 13:04:15,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895494660] [2020-10-09 13:04:15,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,828 INFO L87 Difference]: Start difference. First operand 370 states and 1080 transitions. Second operand 5 states. [2020-10-09 13:04:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,871 INFO L93 Difference]: Finished difference Result 430 states and 1240 transitions. [2020-10-09 13:04:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:04:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,873 INFO L225 Difference]: With dead ends: 430 [2020-10-09 13:04:15,874 INFO L226 Difference]: Without dead ends: 172 [2020-10-09 13:04:15,874 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-09 13:04:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-09 13:04:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-09 13:04:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-10-09 13:04:15,880 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-10-09 13:04:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,881 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-10-09 13:04:15,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-10-09 13:04:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 13:04:15,882 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,882 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 13:04:15,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-10-09 13:04:15,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754508416] [2020-10-09 13:04:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754508416] [2020-10-09 13:04:15,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534282560] [2020-10-09 13:04:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,937 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 5 states. [2020-10-09 13:04:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,970 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-10-09 13:04:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-09 13:04:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,972 INFO L225 Difference]: With dead ends: 148 [2020-10-09 13:04:15,972 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 13:04:15,972 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 13:04:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 13:04:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 13:04:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 13:04:15,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-09 13:04:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,974 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 13:04:15,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 13:04:15,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 13:04:15,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 13:04:15,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 01:04:15 BasicIcfg [2020-10-09 13:04:15,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 13:04:15,980 INFO L168 Benchmark]: Toolchain (without parser) took 4931.71 ms. Allocated memory was 248.5 MB in the beginning and 431.0 MB in the end (delta: 182.5 MB). Free memory was 203.6 MB in the beginning and 358.4 MB in the end (delta: -154.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,981 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 13:04:15,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.82 ms. Allocated memory was 248.5 MB in the beginning and 304.1 MB in the end (delta: 55.6 MB). Free memory was 203.6 MB in the beginning and 257.2 MB in the end (delta: -53.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.20 ms. Allocated memory is still 304.1 MB. Free memory was 257.2 MB in the beginning and 254.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,983 INFO L168 Benchmark]: Boogie Preprocessor took 25.10 ms. Allocated memory is still 304.1 MB. Free memory was 254.7 MB in the beginning and 252.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,984 INFO L168 Benchmark]: RCFGBuilder took 435.81 ms. Allocated memory is still 304.1 MB. Free memory was 252.2 MB in the beginning and 227.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,985 INFO L168 Benchmark]: TraceAbstraction took 3759.06 ms. Allocated memory was 304.1 MB in the beginning and 431.0 MB in the end (delta: 126.9 MB). Free memory was 227.8 MB in the beginning and 358.4 MB in the end (delta: -130.6 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 13:04:15,989 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 656.82 ms. Allocated memory was 248.5 MB in the beginning and 304.1 MB in the end (delta: 55.6 MB). Free memory was 203.6 MB in the beginning and 257.2 MB in the end (delta: -53.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.20 ms. Allocated memory is still 304.1 MB. Free memory was 257.2 MB in the beginning and 254.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.10 ms. Allocated memory is still 304.1 MB. Free memory was 254.7 MB in the beginning and 252.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 435.81 ms. Allocated memory is still 304.1 MB. Free memory was 252.2 MB in the beginning and 227.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3759.06 ms. Allocated memory was 304.1 MB in the beginning and 431.0 MB in the end (delta: 126.9 MB). Free memory was 227.8 MB in the beginning and 358.4 MB in the end (delta: -130.6 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1437 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 232 SDtfs, 262 SDslu, 320 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...