/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/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:32:47,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:32:47,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:32:47,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:32:47,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:32:47,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:32:47,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:32:47,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:32:47,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:32:47,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:32:47,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:32:47,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:32:47,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:32:47,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:32:47,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:32:47,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:32:47,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:32:47,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:32:47,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:32:47,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:32:47,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:32:47,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:32:47,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:32:47,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:32:47,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:32:47,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:32:47,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:32:47,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:32:47,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:32:47,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:32:47,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:32:47,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:32:47,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:32:47,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:32:47,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:32:47,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:32:47,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:32:47,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:32:47,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:32:47,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:32:47,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:32:47,893 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 [2020-09-14 22:32:47,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:32:47,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:32:47,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:32:47,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:32:47,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:32:47,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:32:47,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:32:47,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:32:47,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:32:47,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:32:47,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:32:47,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:32:47,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:32:47,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:32:47,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:32:47,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:32:47,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:32:47,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:32:47,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:32:47,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:32:47,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:32:47,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:32:47,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:32:47,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:32:47,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:32:47,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:32:47,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:32:47,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:32:47,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:32:47,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:32:48,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:32:48,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:32:48,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:32:48,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:32:48,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:32:48,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-14 22:32:48,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e081de221/18e56cea9b53413884073e1f8b5ac7bb/FLAG03f10bb8a [2020-09-14 22:32:49,130 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:32:49,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-14 22:32:49,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e081de221/18e56cea9b53413884073e1f8b5ac7bb/FLAG03f10bb8a [2020-09-14 22:32:49,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e081de221/18e56cea9b53413884073e1f8b5ac7bb [2020-09-14 22:32:49,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:32:49,426 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:32:49,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:32:49,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:32:49,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:32:49,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:32:49" (1/1) ... [2020-09-14 22:32:49,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620aac89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:49, skipping insertion in model container [2020-09-14 22:32:49,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:32:49" (1/1) ... [2020-09-14 22:32:49,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:32:49,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:32:50,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:32:50,063 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:32:50,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:32:50,233 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:32:50,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50 WrapperNode [2020-09-14 22:32:50,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:32:50,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:32:50,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:32:50,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:32:50,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:32:50,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:32:50,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:32:50,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:32:50,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (1/1) ... [2020-09-14 22:32:50,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:32:50,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:32:50,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:32:50,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:32:50,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (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 [2020-09-14 22:32:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:32:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:32:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:32:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:32:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:32:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:32:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:32:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:32:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:32:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:32:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:32:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:32:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:32:50,422 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:32:50,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:32:50,848 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:32:50,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:32:50 BoogieIcfgContainer [2020-09-14 22:32:50,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:32:50,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:32:50,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:32:50,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:32:50,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:32:49" (1/3) ... [2020-09-14 22:32:50,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52074814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:32:50, skipping insertion in model container [2020-09-14 22:32:50,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:32:50" (2/3) ... [2020-09-14 22:32:50,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52074814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:32:50, skipping insertion in model container [2020-09-14 22:32:50,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:32:50" (3/3) ... [2020-09-14 22:32:50,865 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-09-14 22:32:50,877 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:32:50,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:32:50,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:32:50,891 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:32:50,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:50,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:32:51,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:32:51,038 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:32:51,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:32:51,039 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:32:51,039 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:32:51,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:32:51,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:32:51,041 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:32:51,041 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:32:51,068 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-14 22:32:51,070 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-14 22:32:51,120 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-14 22:32:51,120 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:32:51,127 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 22:32:51,131 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-14 22:32:51,178 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-14 22:32:51,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:32:51,180 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 22:32:51,185 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 22:32:51,187 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:32:52,921 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-09-14 22:32:52,922 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-14 22:32:52,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-14 22:32:52,958 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-14 22:32:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-14 22:32:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:32:52,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:52,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:52,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:52,980 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-09-14 22:32:52,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:52,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024729333] [2020-09-14 22:32:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:53,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024729333] [2020-09-14 22:32:53,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:53,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:32:53,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823671940] [2020-09-14 22:32:53,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 22:32:53,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:53,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 22:32:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 22:32:53,232 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-14 22:32:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:53,281 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-14 22:32:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 22:32:53,283 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-14 22:32:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:53,304 INFO L225 Difference]: With dead ends: 362 [2020-09-14 22:32:53,304 INFO L226 Difference]: Without dead ends: 298 [2020-09-14 22:32:53,306 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 [2020-09-14 22:32:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-14 22:32:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-14 22:32:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-14 22:32:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-14 22:32:53,412 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-14 22:32:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:53,413 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-14 22:32:53,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 22:32:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-14 22:32:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:32:53,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:53,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:53,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:32:53,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-09-14 22:32:53,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:53,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77969975] [2020-09-14 22:32:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:53,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77969975] [2020-09-14 22:32:53,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:53,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:32:53,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502673291] [2020-09-14 22:32:53,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:32:53,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:53,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:32:53,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:53,657 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-14 22:32:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:53,786 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-14 22:32:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:32:53,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-14 22:32:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:53,790 INFO L225 Difference]: With dead ends: 330 [2020-09-14 22:32:53,790 INFO L226 Difference]: Without dead ends: 266 [2020-09-14 22:32:53,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:32:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-14 22:32:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-14 22:32:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-14 22:32:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-14 22:32:53,814 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-14 22:32:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:53,814 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-14 22:32:53,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:32:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-14 22:32:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:32:53,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:53,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:53,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:32:53,817 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:53,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-09-14 22:32:53,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:53,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465908255] [2020-09-14 22:32:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:53,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465908255] [2020-09-14 22:32:53,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:53,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:32:53,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134939591] [2020-09-14 22:32:53,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:32:53,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:32:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:53,965 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-14 22:32:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:54,045 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-14 22:32:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:32:54,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 22:32:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:54,052 INFO L225 Difference]: With dead ends: 290 [2020-09-14 22:32:54,052 INFO L226 Difference]: Without dead ends: 242 [2020-09-14 22:32:54,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:32:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-14 22:32:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-14 22:32:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-14 22:32:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-14 22:32:54,086 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-14 22:32:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:54,087 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-14 22:32:54,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:32:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-14 22:32:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:32:54,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:54,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:54,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:32:54,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-09-14 22:32:54,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:54,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349109392] [2020-09-14 22:32:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:54,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349109392] [2020-09-14 22:32:54,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:54,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:32:54,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957062545] [2020-09-14 22:32:54,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:32:54,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:32:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:54,216 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-14 22:32:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:54,281 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-09-14 22:32:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:32:54,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-14 22:32:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:54,283 INFO L225 Difference]: With dead ends: 302 [2020-09-14 22:32:54,283 INFO L226 Difference]: Without dead ends: 140 [2020-09-14 22:32:54,284 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 [2020-09-14 22:32:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-14 22:32:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-14 22:32:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-14 22:32:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-09-14 22:32:54,291 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-09-14 22:32:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:54,310 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-09-14 22:32:54,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:32:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-09-14 22:32:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:32:54,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:54,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:54,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:32:54,318 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-09-14 22:32:54,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:54,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030091890] [2020-09-14 22:32:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:54,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030091890] [2020-09-14 22:32:54,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:54,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:32:54,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529989212] [2020-09-14 22:32:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:32:54,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:54,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:32:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:32:54,451 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 6 states. [2020-09-14 22:32:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:54,554 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-09-14 22:32:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-14 22:32:54,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-14 22:32:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:54,556 INFO L225 Difference]: With dead ends: 176 [2020-09-14 22:32:54,556 INFO L226 Difference]: Without dead ends: 80 [2020-09-14 22:32:54,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-14 22:32:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-14 22:32:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-14 22:32:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-14 22:32:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-09-14 22:32:54,560 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-09-14 22:32:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:54,561 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-09-14 22:32:54,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:32:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-09-14 22:32:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:32:54,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:54,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:54,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:32:54,562 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-09-14 22:32:54,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:54,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44330474] [2020-09-14 22:32:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:54,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44330474] [2020-09-14 22:32:54,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:54,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:32:54,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174453743] [2020-09-14 22:32:54,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:32:54,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:32:54,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:32:54,671 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-09-14 22:32:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:54,708 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-09-14 22:32:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:32:54,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:32:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:54,710 INFO L225 Difference]: With dead ends: 91 [2020-09-14 22:32:54,710 INFO L226 Difference]: Without dead ends: 69 [2020-09-14 22:32:54,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-14 22:32:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-14 22:32:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-14 22:32:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-09-14 22:32:54,714 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-09-14 22:32:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:54,714 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-09-14 22:32:54,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:32:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-09-14 22:32:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:32:54,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:54,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:54,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:32:54,716 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-09-14 22:32:54,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:54,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056033599] [2020-09-14 22:32:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:54,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056033599] [2020-09-14 22:32:54,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:54,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:32:54,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504831521] [2020-09-14 22:32:54,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:32:54,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:54,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:32:54,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:54,805 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-09-14 22:32:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:54,847 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-09-14 22:32:54,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:32:54,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:32:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:54,849 INFO L225 Difference]: With dead ends: 65 [2020-09-14 22:32:54,849 INFO L226 Difference]: Without dead ends: 50 [2020-09-14 22:32:54,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:32:54,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-14 22:32:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-14 22:32:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-14 22:32:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-09-14 22:32:54,852 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-09-14 22:32:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:54,853 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-09-14 22:32:54,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:32:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-09-14 22:32:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:32:54,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:54,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:54,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:32:54,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:54,854 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-09-14 22:32:54,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:54,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110867893] [2020-09-14 22:32:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:54,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110867893] [2020-09-14 22:32:54,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:54,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:32:54,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764688418] [2020-09-14 22:32:54,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:32:54,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:32:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:32:54,977 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-09-14 22:32:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:55,036 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-09-14 22:32:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:32:55,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-14 22:32:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:55,038 INFO L225 Difference]: With dead ends: 43 [2020-09-14 22:32:55,038 INFO L226 Difference]: Without dead ends: 37 [2020-09-14 22:32:55,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:32:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-14 22:32:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-14 22:32:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-14 22:32:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-14 22:32:55,041 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-09-14 22:32:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:55,042 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-14 22:32:55,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:32:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-14 22:32:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 22:32:55,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:32:55,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:32:55,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:32:55,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:32:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:32:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-09-14 22:32:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:32:55,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230835796] [2020-09-14 22:32:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:32:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:32:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:32:55,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230835796] [2020-09-14 22:32:55,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:32:55,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:32:55,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171259919] [2020-09-14 22:32:55,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:32:55,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:32:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:32:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:32:55,163 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-14 22:32:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:32:55,194 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-14 22:32:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:32:55,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-14 22:32:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:32:55,195 INFO L225 Difference]: With dead ends: 36 [2020-09-14 22:32:55,195 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:32:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:32:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:32:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:32:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:32:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:32:55,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-14 22:32:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:32:55,198 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:32:55,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:32:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:32:55,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:32:55,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:32:55,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:32:55 BasicIcfg [2020-09-14 22:32:55,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:32:55,207 INFO L168 Benchmark]: Toolchain (without parser) took 5785.76 ms. Allocated memory was 140.5 MB in the beginning and 245.9 MB in the end (delta: 105.4 MB). Free memory was 101.5 MB in the beginning and 119.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,208 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:32:55,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.62 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 162.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.56 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,215 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 204.5 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,217 INFO L168 Benchmark]: RCFGBuilder took 520.88 ms. Allocated memory is still 204.5 MB. Free memory was 158.3 MB in the beginning and 136.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,217 INFO L168 Benchmark]: TraceAbstraction took 4348.01 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 135.3 MB in the beginning and 119.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:32:55,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.62 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 162.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.56 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 204.5 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.88 ms. Allocated memory is still 204.5 MB. Free memory was 158.3 MB in the beginning and 136.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4348.01 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 135.3 MB in the beginning and 119.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 171 SDtfs, 225 SDslu, 298 SDs, 0 SdLazy, 179 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4930 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...