/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 0.1.25-507b705 [2020-09-11 15:57:04,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:57:04,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:57:04,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:57:04,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:57:04,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:57:04,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:57:04,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:57:04,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:57:04,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:57:04,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:57:04,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:57:04,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:57:04,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:57:04,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:57:04,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:57:04,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:57:04,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:57:04,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:57:04,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:57:04,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:57:04,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:57:04,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:57:04,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:57:04,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:57:04,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:57:04,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:57:04,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:57:04,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:57:04,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:57:04,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:57:04,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:57:04,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:57:04,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:57:04,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:57:04,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:57:04,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:57:04,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:57:04,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:57:04,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:57:04,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:57:04,909 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 [2020-09-11 15:57:04,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:57:04,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:57:04,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:57:04,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:57:04,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:57:04,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:57:04,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:57:04,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:57:04,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:57:04,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:57:04,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:57:04,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:57:04,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:57:04,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:57:04,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:57:04,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:57:04,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:57:04,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:57:04,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:57:04,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:57:04,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:57:04,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:57:04,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:57:04,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:57:04,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:57:04,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:57:04,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:57:04,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:57:04,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:57:04,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:57:05,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:57:05,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:57:05,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:57:05,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:57:05,450 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:57:05,451 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-11 15:57:05,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2ee8ed7/d294cdc428114bd1a08bec47b4fb6a88/FLAG5524e4b93 [2020-09-11 15:57:06,166 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:57:06,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-11 15:57:06,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2ee8ed7/d294cdc428114bd1a08bec47b4fb6a88/FLAG5524e4b93 [2020-09-11 15:57:06,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2ee8ed7/d294cdc428114bd1a08bec47b4fb6a88 [2020-09-11 15:57:06,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:57:06,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:57:06,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:57:06,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:57:06,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:57:06,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:57:06" (1/1) ... [2020-09-11 15:57:06,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9fe3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:06, skipping insertion in model container [2020-09-11 15:57:06,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:57:06" (1/1) ... [2020-09-11 15:57:06,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:57:06,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:57:06,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:57:07,013 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:57:07,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:57:07,182 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:57:07,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07 WrapperNode [2020-09-11 15:57:07,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:57:07,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:57:07,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:57:07,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:57:07,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:57:07,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:57:07,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:57:07,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:57:07,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (1/1) ... [2020-09-11 15:57:07,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:57:07,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:57:07,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:57:07,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:57:07,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (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 [2020-09-11 15:57:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:57:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:57:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:57:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:57:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:57:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:57:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:57:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:57:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:57:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:57:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 15:57:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 15:57:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:57:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:57:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:57:07,350 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:57:07,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:57:07,773 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:57:07,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:57:07 BoogieIcfgContainer [2020-09-11 15:57:07,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:57:07,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:57:07,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:57:07,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:57:07,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:57:06" (1/3) ... [2020-09-11 15:57:07,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9ac0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:57:07, skipping insertion in model container [2020-09-11 15:57:07,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:57:07" (2/3) ... [2020-09-11 15:57:07,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9ac0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:57:07, skipping insertion in model container [2020-09-11 15:57:07,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:57:07" (3/3) ... [2020-09-11 15:57:07,788 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-09-11 15:57:07,800 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:57:07,800 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:57:07,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:57:07,811 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:57:07,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,855 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,855 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,855 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,856 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,856 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,856 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,861 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,861 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,862 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,869 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,869 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,869 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,869 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:57:07,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:57:07,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:57:07,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:57:07,928 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:57:07,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:57:07,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:57:07,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:57:07,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:57:07,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:57:07,945 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-11 15:57:07,947 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-11 15:57:08,008 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-11 15:57:08,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:57:08,015 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. [2020-09-11 15:57:08,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-11 15:57:08,045 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-11 15:57:08,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:57:08,047 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. [2020-09-11 15:57:08,053 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-11 15:57:08,054 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:57:09,823 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-11 15:57:09,885 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-11 15:57:09,886 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-11 15:57:09,891 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-11 15:57:10,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-11 15:57:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-11 15:57:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:57:10,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:10,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:10,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:10,042 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-11 15:57:10,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:10,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782707086] [2020-09-11 15:57:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:10,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782707086] [2020-09-11 15:57:10,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:10,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:57:10,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24371552] [2020-09-11 15:57:10,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:57:10,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:57:10,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:57:10,363 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-11 15:57:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:10,438 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-11 15:57:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:57:10,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-11 15:57:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:10,494 INFO L225 Difference]: With dead ends: 1450 [2020-09-11 15:57:10,496 INFO L226 Difference]: Without dead ends: 1194 [2020-09-11 15:57:10,498 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 [2020-09-11 15:57:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-11 15:57:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-11 15:57:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-11 15:57:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-11 15:57:10,651 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-11 15:57:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:10,657 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-11 15:57:10,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:57:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-11 15:57:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:57:10,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:10,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:10,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:57:10,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:10,664 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-11 15:57:10,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:10,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187344115] [2020-09-11 15:57:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:10,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187344115] [2020-09-11 15:57:10,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:10,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:57:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081734346] [2020-09-11 15:57:10,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:57:10,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:10,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:57:10,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:57:10,804 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-11 15:57:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:10,862 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-11 15:57:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:57:10,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:57:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:10,873 INFO L225 Difference]: With dead ends: 1322 [2020-09-11 15:57:10,873 INFO L226 Difference]: Without dead ends: 1066 [2020-09-11 15:57:10,874 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 [2020-09-11 15:57:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-11 15:57:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-11 15:57:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-11 15:57:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-11 15:57:10,915 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-11 15:57:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:10,916 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-11 15:57:10,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:57:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-11 15:57:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:57:10,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:10,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:10,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:57:10,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-09-11 15:57:10,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:10,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152936099] [2020-09-11 15:57:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152936099] [2020-09-11 15:57:11,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:57:11,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483629607] [2020-09-11 15:57:11,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:57:11,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:57:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:57:11,006 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-11 15:57:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,037 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-11 15:57:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:57:11,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:57:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,046 INFO L225 Difference]: With dead ends: 1162 [2020-09-11 15:57:11,046 INFO L226 Difference]: Without dead ends: 970 [2020-09-11 15:57:11,047 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 [2020-09-11 15:57:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-11 15:57:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-11 15:57:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-11 15:57:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-11 15:57:11,117 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-11 15:57:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,117 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-11 15:57:11,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:57:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-11 15:57:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:57:11,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:57:11,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,121 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-09-11 15:57:11,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605955479] [2020-09-11 15:57:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605955479] [2020-09-11 15:57:11,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:57:11,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37330959] [2020-09-11 15:57:11,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:57:11,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:57:11,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:57:11,193 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-09-11 15:57:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,219 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-09-11 15:57:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:57:11,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:57:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,227 INFO L225 Difference]: With dead ends: 1042 [2020-09-11 15:57:11,227 INFO L226 Difference]: Without dead ends: 898 [2020-09-11 15:57:11,228 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 [2020-09-11 15:57:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-09-11 15:57:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-09-11 15:57:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-11 15:57:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-09-11 15:57:11,258 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-09-11 15:57:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,259 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-09-11 15:57:11,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:57:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-09-11 15:57:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:57:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:57:11,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1753289104, now seen corresponding path program 1 times [2020-09-11 15:57:11,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894159533] [2020-09-11 15:57:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894159533] [2020-09-11 15:57:11,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:57:11,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329317867] [2020-09-11 15:57:11,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:57:11,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:57:11,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:57:11,334 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-09-11 15:57:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,359 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-09-11 15:57:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:57:11,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:57:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,366 INFO L225 Difference]: With dead ends: 952 [2020-09-11 15:57:11,366 INFO L226 Difference]: Without dead ends: 844 [2020-09-11 15:57:11,367 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 [2020-09-11 15:57:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-11 15:57:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-09-11 15:57:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-09-11 15:57:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-09-11 15:57:11,394 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-09-11 15:57:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,394 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-09-11 15:57:11,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:57:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-09-11 15:57:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:57:11,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:57:11,397 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-09-11 15:57:11,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241463307] [2020-09-11 15:57:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241463307] [2020-09-11 15:57:11,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:57:11,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373237029] [2020-09-11 15:57:11,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:57:11,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:57:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:57:11,474 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-09-11 15:57:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,529 INFO L93 Difference]: Finished difference Result 1123 states and 3753 transitions. [2020-09-11 15:57:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:57:11,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:57:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,535 INFO L225 Difference]: With dead ends: 1123 [2020-09-11 15:57:11,535 INFO L226 Difference]: Without dead ends: 538 [2020-09-11 15:57:11,535 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 [2020-09-11 15:57:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-09-11 15:57:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-09-11 15:57:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-11 15:57:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1698 transitions. [2020-09-11 15:57:11,553 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1698 transitions. Word has length 15 [2020-09-11 15:57:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,553 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1698 transitions. [2020-09-11 15:57:11,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:57:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1698 transitions. [2020-09-11 15:57:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:57:11,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:57:11,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2121425426, now seen corresponding path program 1 times [2020-09-11 15:57:11,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105904801] [2020-09-11 15:57:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105904801] [2020-09-11 15:57:11,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:57:11,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747470143] [2020-09-11 15:57:11,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:57:11,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:57:11,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:57:11,632 INFO L87 Difference]: Start difference. First operand 538 states and 1698 transitions. Second operand 5 states. [2020-09-11 15:57:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,674 INFO L93 Difference]: Finished difference Result 676 states and 2093 transitions. [2020-09-11 15:57:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:57:11,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-11 15:57:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,677 INFO L225 Difference]: With dead ends: 676 [2020-09-11 15:57:11,678 INFO L226 Difference]: Without dead ends: 382 [2020-09-11 15:57:11,678 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 [2020-09-11 15:57:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-11 15:57:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-09-11 15:57:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-11 15:57:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1116 transitions. [2020-09-11 15:57:11,690 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1116 transitions. Word has length 16 [2020-09-11 15:57:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,691 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 1116 transitions. [2020-09-11 15:57:11,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:57:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1116 transitions. [2020-09-11 15:57:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:57:11,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:57:11,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1339206906, now seen corresponding path program 1 times [2020-09-11 15:57:11,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51543222] [2020-09-11 15:57:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51543222] [2020-09-11 15:57:11,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:57:11,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584947367] [2020-09-11 15:57:11,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:57:11,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:57:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:57:11,765 INFO L87 Difference]: Start difference. First operand 382 states and 1116 transitions. Second operand 5 states. [2020-09-11 15:57:11,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,810 INFO L93 Difference]: Finished difference Result 466 states and 1344 transitions. [2020-09-11 15:57:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:57:11,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 15:57:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,813 INFO L225 Difference]: With dead ends: 466 [2020-09-11 15:57:11,813 INFO L226 Difference]: Without dead ends: 154 [2020-09-11 15:57:11,813 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 [2020-09-11 15:57:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-11 15:57:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-11 15:57:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-11 15:57:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-09-11 15:57:11,819 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-09-11 15:57:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,819 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-09-11 15:57:11,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:57:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-09-11 15:57:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:57:11,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:57:11,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:57:11,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:57:11,821 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:57:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:57:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-09-11 15:57:11,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:57:11,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540822363] [2020-09-11 15:57:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:57:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:57:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:57:11,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540822363] [2020-09-11 15:57:11,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:57:11,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:57:11,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027337147] [2020-09-11 15:57:11,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:57:11,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:57:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:57:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:57:11,898 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-09-11 15:57:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:57:11,952 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-09-11 15:57:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:57:11,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 15:57:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:57:11,952 INFO L225 Difference]: With dead ends: 130 [2020-09-11 15:57:11,953 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:57:11,953 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 [2020-09-11 15:57:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:57:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:57:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:57:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:57:11,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-11 15:57:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:57:11,954 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:57:11,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:57:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:57:11,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:57:11,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:57:11,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:57:11 BasicIcfg [2020-09-11 15:57:11,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:57:11,961 INFO L168 Benchmark]: Toolchain (without parser) took 5531.38 ms. Allocated memory was 143.1 MB in the beginning and 278.4 MB in the end (delta: 135.3 MB). Free memory was 104.8 MB in the beginning and 238.2 MB in the end (delta: -133.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:57:11,962 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:57:11,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.88 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 104.2 MB in the beginning and 161.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-11 15:57:11,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 159.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:57:11,964 INFO L168 Benchmark]: Boogie Preprocessor took 29.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:57:11,965 INFO L168 Benchmark]: RCFGBuilder took 507.93 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 133.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:57:11,966 INFO L168 Benchmark]: TraceAbstraction took 4179.29 ms. Allocated memory was 205.0 MB in the beginning and 278.4 MB in the end (delta: 73.4 MB). Free memory was 132.5 MB in the beginning and 238.2 MB in the end (delta: -105.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:57:11,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.88 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 104.2 MB in the beginning and 161.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 159.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.93 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 133.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4179.29 ms. Allocated memory was 205.0 MB in the beginning and 278.4 MB in the end (delta: 73.4 MB). Free memory was 132.5 MB in the beginning and 238.2 MB in the end (delta: -105.8 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: 1.9s, 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: 0.3s, 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: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, 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, 0.2s 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s 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...