/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 00:20:30,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:20:30,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:20:30,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 00:20:30,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 00:20:30,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 00:20:30,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 00:20:31,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 00:20:31,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 00:20:31,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 00:20:31,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 00:20:31,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 00:20:31,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:20:31,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:20:31,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:20:31,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:20:31,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:20:31,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:20:31,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:20:31,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:20:31,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:20:31,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:20:31,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:20:31,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:20:31,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:20:31,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 00:20:31,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 00:20:31,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 00:20:31,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 00:20:31,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 00:20:31,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 00:20:31,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 00:20:31,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 00:20:31,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:20:31,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:20:31,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:20:31,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-15 00:20:31,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:20:31,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:20:31,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:20:31,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:20:31,131 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:20:31,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:20:31,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:20:31,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:20:31,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:20:31,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:20:31,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:20:31,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:20:31,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:20:31,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:20:31,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:20:31,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:20:31,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:20:31,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:20:31,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:20:31,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:20:31,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:20:31,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:20:31,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:20:31,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:20:31,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:20:31,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:20:31,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:20:31,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:20:31,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:20:31,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:20:31,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:20:31,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:20:31,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:20:31,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:20:31,660 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:20:31,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-15 00:20:31,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75a705b7e/3099fd18653948bc98c771ae283d2c8c/FLAG4b0b7097c [2020-09-15 00:20:32,437 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:20:32,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-15 00:20:32,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75a705b7e/3099fd18653948bc98c771ae283d2c8c/FLAG4b0b7097c [2020-09-15 00:20:32,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75a705b7e/3099fd18653948bc98c771ae283d2c8c [2020-09-15 00:20:32,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:20:32,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:20:32,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:20:32,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:20:32,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:20:32,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:20:32" (1/1) ... [2020-09-15 00:20:32,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462e4a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:32, skipping insertion in model container [2020-09-15 00:20:32,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:20:32" (1/1) ... [2020-09-15 00:20:32,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:20:32,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:20:33,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:20:33,450 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:20:33,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:20:33,586 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:20:33,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33 WrapperNode [2020-09-15 00:20:33,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:20:33,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:20:33,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:20:33,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:20:33,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:20:33,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:20:33,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:20:33,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:20:33,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... [2020-09-15 00:20:33,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:20:33,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:20:33,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:20:33,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:20:33,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-15 00:20:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:20:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 00:20:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:20:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:20:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 00:20:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 00:20:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 00:20:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 00:20:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 00:20:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 00:20:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-15 00:20:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-15 00:20:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 00:20:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:20:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:20:33,779 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:20:34,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:20:34,200 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 00:20:34,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:20:34 BoogieIcfgContainer [2020-09-15 00:20:34,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:20:34,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:20:34,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:20:34,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:20:34,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:20:32" (1/3) ... [2020-09-15 00:20:34,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e561f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:20:34, skipping insertion in model container [2020-09-15 00:20:34,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:20:33" (2/3) ... [2020-09-15 00:20:34,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e561f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:20:34, skipping insertion in model container [2020-09-15 00:20:34,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:20:34" (3/3) ... [2020-09-15 00:20:34,219 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-09-15 00:20:34,232 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:20:34,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:20:34,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:20:34,246 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:20:34,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,294 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,294 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,295 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,296 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,297 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,297 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,301 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,302 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,307 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,317 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,317 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,318 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,318 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:20:34,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:20:34,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:20:34,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:20:34,387 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:20:34,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:20:34,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:20:34,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:20:34,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:20:34,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:20:34,412 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-15 00:20:34,414 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-15 00:20:34,467 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-15 00:20:34,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:20:34,475 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. [2020-09-15 00:20:34,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-15 00:20:34,507 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-15 00:20:34,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:20:34,509 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. [2020-09-15 00:20:34,512 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-15 00:20:34,514 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:20:36,394 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-15 00:20:36,464 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-15 00:20:36,464 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-15 00:20:36,469 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-15 00:20:36,582 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-15 00:20:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-15 00:20:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 00:20:36,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:36,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:36,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-15 00:20:36,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:36,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356279167] [2020-09-15 00:20:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:36,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356279167] [2020-09-15 00:20:36,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:36,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:20:36,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710517985] [2020-09-15 00:20:36,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 00:20:36,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:36,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 00:20:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 00:20:36,882 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-15 00:20:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:36,992 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-15 00:20:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 00:20:36,994 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-15 00:20:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:37,031 INFO L225 Difference]: With dead ends: 1450 [2020-09-15 00:20:37,031 INFO L226 Difference]: Without dead ends: 1194 [2020-09-15 00:20:37,034 INFO L675 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 [2020-09-15 00:20:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-15 00:20:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-15 00:20:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-15 00:20:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-15 00:20:37,191 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-15 00:20:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:37,193 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-15 00:20:37,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 00:20:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-15 00:20:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 00:20:37,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:37,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:37,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:20:37,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-15 00:20:37,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:37,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279296368] [2020-09-15 00:20:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:37,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279296368] [2020-09-15 00:20:37,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:37,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:20:37,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405412068] [2020-09-15 00:20:37,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:20:37,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:37,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:20:37,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:20:37,370 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-15 00:20:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:37,430 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-15 00:20:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:20:37,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 00:20:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:37,441 INFO L225 Difference]: With dead ends: 1322 [2020-09-15 00:20:37,442 INFO L226 Difference]: Without dead ends: 1066 [2020-09-15 00:20:37,443 INFO L675 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 [2020-09-15 00:20:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-15 00:20:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-15 00:20:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-15 00:20:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-15 00:20:37,495 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-15 00:20:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:37,496 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-15 00:20:37,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:20:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-15 00:20:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 00:20:37,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:37,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:37,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:20:37,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:37,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-09-15 00:20:37,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:37,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137914754] [2020-09-15 00:20:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:37,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137914754] [2020-09-15 00:20:37,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:37,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:20:37,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041676030] [2020-09-15 00:20:37,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:20:37,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:37,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:20:37,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:20:37,659 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-15 00:20:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:37,695 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-15 00:20:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:20:37,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 00:20:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:37,705 INFO L225 Difference]: With dead ends: 1162 [2020-09-15 00:20:37,705 INFO L226 Difference]: Without dead ends: 970 [2020-09-15 00:20:37,706 INFO L675 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 [2020-09-15 00:20:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-15 00:20:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-15 00:20:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-15 00:20:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-15 00:20:37,775 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-15 00:20:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:37,775 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-15 00:20:37,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:20:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-15 00:20:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:20:37,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:37,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:37,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:20:37,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-09-15 00:20:37,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:37,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920558032] [2020-09-15 00:20:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:37,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920558032] [2020-09-15 00:20:37,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:37,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:20:37,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083009332] [2020-09-15 00:20:37,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:20:37,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:37,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:20:37,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:20:37,853 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-09-15 00:20:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:37,883 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-09-15 00:20:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:20:37,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 00:20:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:37,891 INFO L225 Difference]: With dead ends: 1042 [2020-09-15 00:20:37,892 INFO L226 Difference]: Without dead ends: 898 [2020-09-15 00:20:37,892 INFO L675 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 [2020-09-15 00:20:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-09-15 00:20:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-09-15 00:20:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-15 00:20:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-09-15 00:20:37,926 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-09-15 00:20:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:37,926 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-09-15 00:20:37,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:20:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-09-15 00:20:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:20:37,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:37,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:37,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:20:37,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:37,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1753289104, now seen corresponding path program 1 times [2020-09-15 00:20:37,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:37,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494993281] [2020-09-15 00:20:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:38,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494993281] [2020-09-15 00:20:38,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:38,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:20:38,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864514246] [2020-09-15 00:20:38,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:20:38,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:38,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:20:38,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:20:38,004 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-09-15 00:20:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:38,034 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-09-15 00:20:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 00:20:38,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-15 00:20:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:38,041 INFO L225 Difference]: With dead ends: 952 [2020-09-15 00:20:38,041 INFO L226 Difference]: Without dead ends: 844 [2020-09-15 00:20:38,042 INFO L675 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 [2020-09-15 00:20:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-15 00:20:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-09-15 00:20:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-09-15 00:20:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-09-15 00:20:38,073 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-09-15 00:20:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:38,074 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-09-15 00:20:38,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:20:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-09-15 00:20:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:20:38,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:38,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:38,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:20:38,077 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-09-15 00:20:38,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:38,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164045513] [2020-09-15 00:20:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:38,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164045513] [2020-09-15 00:20:38,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:38,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:20:38,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548622121] [2020-09-15 00:20:38,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:20:38,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:38,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:20:38,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:20:38,160 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-09-15 00:20:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:38,219 INFO L93 Difference]: Finished difference Result 1123 states and 3753 transitions. [2020-09-15 00:20:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:20:38,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-15 00:20:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:38,224 INFO L225 Difference]: With dead ends: 1123 [2020-09-15 00:20:38,225 INFO L226 Difference]: Without dead ends: 538 [2020-09-15 00:20:38,225 INFO L675 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 [2020-09-15 00:20:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-09-15 00:20:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-09-15 00:20:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-15 00:20:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1698 transitions. [2020-09-15 00:20:38,244 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1698 transitions. Word has length 15 [2020-09-15 00:20:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:38,244 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1698 transitions. [2020-09-15 00:20:38,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:20:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1698 transitions. [2020-09-15 00:20:38,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-15 00:20:38,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:38,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:38,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:20:38,247 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2121425426, now seen corresponding path program 1 times [2020-09-15 00:20:38,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:38,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591846654] [2020-09-15 00:20:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:38,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591846654] [2020-09-15 00:20:38,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:38,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:20:38,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567942664] [2020-09-15 00:20:38,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:20:38,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:38,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:20:38,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:20:38,325 INFO L87 Difference]: Start difference. First operand 538 states and 1698 transitions. Second operand 5 states. [2020-09-15 00:20:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:38,371 INFO L93 Difference]: Finished difference Result 676 states and 2093 transitions. [2020-09-15 00:20:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:20:38,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-15 00:20:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:38,375 INFO L225 Difference]: With dead ends: 676 [2020-09-15 00:20:38,375 INFO L226 Difference]: Without dead ends: 382 [2020-09-15 00:20:38,376 INFO L675 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 [2020-09-15 00:20:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-15 00:20:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-09-15 00:20:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-15 00:20:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1116 transitions. [2020-09-15 00:20:38,387 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1116 transitions. Word has length 16 [2020-09-15 00:20:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:38,388 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 1116 transitions. [2020-09-15 00:20:38,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:20:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1116 transitions. [2020-09-15 00:20:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:20:38,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:38,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:38,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:20:38,390 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:38,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1339206906, now seen corresponding path program 1 times [2020-09-15 00:20:38,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:38,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377767408] [2020-09-15 00:20:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:38,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377767408] [2020-09-15 00:20:38,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:38,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:20:38,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805203193] [2020-09-15 00:20:38,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:20:38,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:20:38,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:20:38,487 INFO L87 Difference]: Start difference. First operand 382 states and 1116 transitions. Second operand 5 states. [2020-09-15 00:20:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:38,547 INFO L93 Difference]: Finished difference Result 466 states and 1344 transitions. [2020-09-15 00:20:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:20:38,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:20:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:38,549 INFO L225 Difference]: With dead ends: 466 [2020-09-15 00:20:38,550 INFO L226 Difference]: Without dead ends: 154 [2020-09-15 00:20:38,550 INFO L675 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 [2020-09-15 00:20:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-15 00:20:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-15 00:20:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-15 00:20:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-09-15 00:20:38,556 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-09-15 00:20:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:38,557 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-09-15 00:20:38,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:20:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-09-15 00:20:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:20:38,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:20:38,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:20:38,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:20:38,558 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:20:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:20:38,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-09-15 00:20:38,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:20:38,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079102917] [2020-09-15 00:20:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:20:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:20:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:20:38,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079102917] [2020-09-15 00:20:38,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:20:38,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:20:38,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533827992] [2020-09-15 00:20:38,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:20:38,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:20:38,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:20:38,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:20:38,676 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-09-15 00:20:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:20:38,722 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-09-15 00:20:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:20:38,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-15 00:20:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:20:38,723 INFO L225 Difference]: With dead ends: 130 [2020-09-15 00:20:38,723 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 00:20:38,724 INFO L675 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 [2020-09-15 00:20:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 00:20:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 00:20:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 00:20:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 00:20:38,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-15 00:20:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:20:38,725 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 00:20:38,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:20:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 00:20:38,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 00:20:38,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:20:38,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 12:20:38 BasicIcfg [2020-09-15 00:20:38,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 00:20:38,734 INFO L168 Benchmark]: Toolchain (without parser) took 6033.35 ms. Allocated memory was 147.8 MB in the beginning and 271.1 MB in the end (delta: 123.2 MB). Free memory was 102.6 MB in the beginning and 221.7 MB in the end (delta: -119.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,735 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.82 ms. Allocated memory was 147.8 MB in the beginning and 209.2 MB in the end (delta: 61.3 MB). Free memory was 101.9 MB in the beginning and 164.9 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.18 ms. Allocated memory is still 209.2 MB. Free memory was 164.9 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,742 INFO L168 Benchmark]: Boogie Preprocessor took 30.96 ms. Allocated memory is still 209.2 MB. Free memory was 163.0 MB in the beginning and 161.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,743 INFO L168 Benchmark]: RCFGBuilder took 527.39 ms. Allocated memory is still 209.2 MB. Free memory was 161.6 MB in the beginning and 136.5 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-15 00:20:38,745 INFO L168 Benchmark]: TraceAbstraction took 4524.15 ms. Allocated memory was 209.2 MB in the beginning and 271.1 MB in the end (delta: 61.9 MB). Free memory was 135.9 MB in the beginning and 221.7 MB in the end (delta: -85.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 00:20:38,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 882.82 ms. Allocated memory was 147.8 MB in the beginning and 209.2 MB in the end (delta: 61.3 MB). Free memory was 101.9 MB in the beginning and 164.9 MB in the end (delta: -63.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.18 ms. Allocated memory is still 209.2 MB. Free memory was 164.9 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.96 ms. Allocated memory is still 209.2 MB. Free memory was 163.0 MB in the beginning and 161.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.39 ms. Allocated memory is still 209.2 MB. Free memory was 161.6 MB in the beginning and 136.5 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4524.15 ms. Allocated memory was 209.2 MB in the beginning and 271.1 MB in the end (delta: 61.9 MB). Free memory was 135.9 MB in the beginning and 221.7 MB in the end (delta: -85.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - 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: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 263 SDtfs, 283 SDslu, 370 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...