/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/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:13:53,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:13:53,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:13:53,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:13:53,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:13:53,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:13:53,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:13:53,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:13:53,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:13:53,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:13:53,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:13:53,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:13:53,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:13:53,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:13:53,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:13:53,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:13:53,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:13:53,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:13:53,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:13:53,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:13:53,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:13:53,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:13:53,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:13:53,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:13:53,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:13:53,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:13:53,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:13:53,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:13:53,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:13:53,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:13:53,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:13:53,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:13:53,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:13:53,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:13:53,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:13:53,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:13:53,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:13:53,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:13:53,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:13:53,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:13:53,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:13:53,395 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 15:13:53,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:13:53,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:13:53,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:13:53,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:13:53,442 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:13:53,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:13:53,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:13:53,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:13:53,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:13:53,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:13:53,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:13:53,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:13:53,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:13:53,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:13:53,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:13:53,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:13:53,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:13:53,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:13:53,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:13:53,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:13:53,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:13:53,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:13:53,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:13:53,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:13:53,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:13:53,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:13:53,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:13:53,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:13:53,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:13:53,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:13:53,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:13:53,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:13:53,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:13:53,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:13:53,901 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:13:53,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-09-11 15:13:53,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b36a653a/75ed29d5a7a840e2a8f83b884b131d63/FLAG61defb921 [2020-09-11 15:13:54,584 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:13:54,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2020-09-11 15:13:54,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b36a653a/75ed29d5a7a840e2a8f83b884b131d63/FLAG61defb921 [2020-09-11 15:13:54,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b36a653a/75ed29d5a7a840e2a8f83b884b131d63 [2020-09-11 15:13:54,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:13:54,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:13:54,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:13:54,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:13:54,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:13:54,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:13:54" (1/1) ... [2020-09-11 15:13:54,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14df979a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:54, skipping insertion in model container [2020-09-11 15:13:54,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:13:54" (1/1) ... [2020-09-11 15:13:54,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:13:54,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:13:55,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:13:55,490 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:13:55,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:13:55,661 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:13:55,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55 WrapperNode [2020-09-11 15:13:55,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:13:55,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:13:55,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:13:55,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:13:55,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:13:55,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:13:55,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:13:55,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:13:55,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (1/1) ... [2020-09-11 15:13:55,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:13:55,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:13:55,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:13:55,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:13:55,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (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 15:13:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:13:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:13:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:13:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:13:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:13:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:13:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:13:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:13:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:13:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:13:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:13:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:13:55,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:13:55,843 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 15:13:56,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:13:56,252 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:13:56,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:13:56 BoogieIcfgContainer [2020-09-11 15:13:56,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:13:56,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:13:56,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:13:56,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:13:56,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:13:54" (1/3) ... [2020-09-11 15:13:56,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211ca048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:13:56, skipping insertion in model container [2020-09-11 15:13:56,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:55" (2/3) ... [2020-09-11 15:13:56,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211ca048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:13:56, skipping insertion in model container [2020-09-11 15:13:56,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:13:56" (3/3) ... [2020-09-11 15:13:56,268 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-09-11 15:13:56,280 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:13:56,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:13:56,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:13:56,291 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:13:56,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,321 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,321 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,343 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,343 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,344 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,347 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,347 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:56,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:13:56,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:13:56,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:13:56,399 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:13:56,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:13:56,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:13:56,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:13:56,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:13:56,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:13:56,417 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-11 15:13:56,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 15:13:56,467 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 15:13:56,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:13:56,474 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:13:56,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 15:13:56,498 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 15:13:56,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:13:56,499 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:13:56,501 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-11 15:13:56,502 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:13:57,841 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-11 15:13:58,091 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-11 15:13:58,092 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-11 15:13:58,097 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-11 15:13:58,134 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-11 15:13:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-11 15:13:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:13:58,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:58,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:58,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-11 15:13:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:58,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779105432] [2020-09-11 15:13:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:58,437 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 15:13:58,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779105432] [2020-09-11 15:13:58,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:58,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:13:58,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964664511] [2020-09-11 15:13:58,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:13:58,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:13:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:58,465 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-11 15:13:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:58,513 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-11 15:13:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:13:58,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:13:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:58,534 INFO L225 Difference]: With dead ends: 222 [2020-09-11 15:13:58,535 INFO L226 Difference]: Without dead ends: 174 [2020-09-11 15:13:58,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-11 15:13:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-11 15:13:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-11 15:13:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-11 15:13:58,607 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-11 15:13:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:58,608 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-11 15:13:58,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:13:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-11 15:13:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:13:58,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:58,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:58,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:13:58,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 1 times [2020-09-11 15:13:58,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:58,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593233634] [2020-09-11 15:13:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:58,704 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 15:13:58,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593233634] [2020-09-11 15:13:58,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:58,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:13:58,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884781929] [2020-09-11 15:13:58,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:13:58,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:58,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:13:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:13:58,709 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-09-11 15:13:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:58,737 INFO L93 Difference]: Finished difference Result 204 states and 513 transitions. [2020-09-11 15:13:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:13:58,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:13:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:58,739 INFO L225 Difference]: With dead ends: 204 [2020-09-11 15:13:58,739 INFO L226 Difference]: Without dead ends: 108 [2020-09-11 15:13:58,740 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 15:13:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-11 15:13:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-11 15:13:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-11 15:13:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 253 transitions. [2020-09-11 15:13:58,752 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 253 transitions. Word has length 9 [2020-09-11 15:13:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:58,753 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 253 transitions. [2020-09-11 15:13:58,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:13:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2020-09-11 15:13:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:13:58,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:58,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:58,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:13:58,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 1 times [2020-09-11 15:13:58,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:58,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027181092] [2020-09-11 15:13:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:58,873 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 15:13:58,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027181092] [2020-09-11 15:13:58,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:58,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:13:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613119502] [2020-09-11 15:13:58,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:13:58,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:13:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:58,876 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand 3 states. [2020-09-11 15:13:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:58,889 INFO L93 Difference]: Finished difference Result 106 states and 246 transitions. [2020-09-11 15:13:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:13:58,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 15:13:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:58,893 INFO L225 Difference]: With dead ends: 106 [2020-09-11 15:13:58,893 INFO L226 Difference]: Without dead ends: 106 [2020-09-11 15:13:58,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-11 15:13:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-11 15:13:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-11 15:13:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 246 transitions. [2020-09-11 15:13:58,911 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 246 transitions. Word has length 11 [2020-09-11 15:13:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:58,912 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 246 transitions. [2020-09-11 15:13:58,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:13:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 246 transitions. [2020-09-11 15:13:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:13:58,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:58,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:58,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:13:58,915 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash -197699224, now seen corresponding path program 1 times [2020-09-11 15:13:58,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:58,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363338809] [2020-09-11 15:13:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:59,022 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 15:13:59,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363338809] [2020-09-11 15:13:59,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:59,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:13:59,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973708438] [2020-09-11 15:13:59,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:13:59,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:13:59,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:13:59,025 INFO L87 Difference]: Start difference. First operand 106 states and 246 transitions. Second operand 4 states. [2020-09-11 15:13:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:59,049 INFO L93 Difference]: Finished difference Result 138 states and 314 transitions. [2020-09-11 15:13:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:13:59,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:13:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:59,052 INFO L225 Difference]: With dead ends: 138 [2020-09-11 15:13:59,052 INFO L226 Difference]: Without dead ends: 60 [2020-09-11 15:13:59,053 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 15:13:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-11 15:13:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-11 15:13:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-11 15:13:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-11 15:13:59,064 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 12 [2020-09-11 15:13:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:59,064 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-11 15:13:59,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:13:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-11 15:13:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:13:59,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:59,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:59,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:13:59,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 2 times [2020-09-11 15:13:59,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:59,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375502260] [2020-09-11 15:13:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:59,202 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 15:13:59,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375502260] [2020-09-11 15:13:59,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:59,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:13:59,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500391068] [2020-09-11 15:13:59,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:13:59,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:13:59,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:13:59,206 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-09-11 15:13:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:59,242 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-09-11 15:13:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:13:59,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:13:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:59,244 INFO L225 Difference]: With dead ends: 73 [2020-09-11 15:13:59,244 INFO L226 Difference]: Without dead ends: 52 [2020-09-11 15:13:59,244 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 15:13:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-11 15:13:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-11 15:13:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-11 15:13:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-09-11 15:13:59,248 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-09-11 15:13:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:59,249 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-09-11 15:13:59,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:13:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-09-11 15:13:59,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:13:59,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:59,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:59,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:13:59,250 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:59,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-09-11 15:13:59,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:59,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791552265] [2020-09-11 15:13:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:59,372 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 15:13:59,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791552265] [2020-09-11 15:13:59,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:59,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:59,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030091890] [2020-09-11 15:13:59,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:13:59,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:59,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:13:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:13:59,375 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-09-11 15:13:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:59,434 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-09-11 15:13:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:13:59,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 15:13:59,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:59,435 INFO L225 Difference]: With dead ends: 53 [2020-09-11 15:13:59,436 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 15:13:59,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:13:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 15:13:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 15:13:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 15:13:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-11 15:13:59,440 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-09-11 15:13:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:59,440 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-11 15:13:59,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:13:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-11 15:13:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:13:59,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:59,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:59,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:13:59,442 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:59,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-11 15:13:59,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:59,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969161095] [2020-09-11 15:13:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:59,526 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 15:13:59,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969161095] [2020-09-11 15:13:59,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:59,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:13:59,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142350985] [2020-09-11 15:13:59,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:13:59,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:59,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:13:59,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:13:59,528 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-09-11 15:13:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:59,603 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-11 15:13:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:13:59,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 15:13:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:59,604 INFO L225 Difference]: With dead ends: 35 [2020-09-11 15:13:59,604 INFO L226 Difference]: Without dead ends: 29 [2020-09-11 15:13:59,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:13:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-11 15:13:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-11 15:13:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-11 15:13:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-11 15:13:59,609 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-11 15:13:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:59,609 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-11 15:13:59,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:13:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-11 15:13:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:13:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:59,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:59,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:13:59,611 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-11 15:13:59,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:59,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735927289] [2020-09-11 15:13:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:59,694 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 15:13:59,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735927289] [2020-09-11 15:13:59,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:59,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:13:59,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026778048] [2020-09-11 15:13:59,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:13:59,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:13:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:59,697 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-11 15:13:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:59,704 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-11 15:13:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:13:59,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-11 15:13:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:59,706 INFO L225 Difference]: With dead ends: 28 [2020-09-11 15:13:59,706 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:13:59,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:13:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:13:59,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:13:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:13:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:13:59,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-11 15:13:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:59,708 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:13:59,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:13:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:13:59,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:13:59,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:13:59,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:13:59 BasicIcfg [2020-09-11 15:13:59,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:13:59,725 INFO L168 Benchmark]: Toolchain (without parser) took 4891.62 ms. Allocated memory was 141.0 MB in the beginning and 248.0 MB in the end (delta: 107.0 MB). Free memory was 102.7 MB in the beginning and 174.3 MB in the end (delta: -71.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,726 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.50 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 163.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,730 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.2 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,735 INFO L168 Benchmark]: RCFGBuilder took 506.47 ms. Allocated memory is still 205.5 MB. Free memory was 159.2 MB in the beginning and 137.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,735 INFO L168 Benchmark]: TraceAbstraction took 3459.83 ms. Allocated memory was 205.5 MB in the beginning and 248.0 MB in the end (delta: 42.5 MB). Free memory was 137.5 MB in the beginning and 174.3 MB in the end (delta: -36.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:59,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 826.50 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 163.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.2 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.47 ms. Allocated memory is still 205.5 MB. Free memory was 159.2 MB in the beginning and 137.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3459.83 ms. Allocated memory was 205.5 MB in the beginning and 248.0 MB in the end (delta: 42.5 MB). Free memory was 137.5 MB in the beginning and 174.3 MB in the end (delta: -36.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 125 SDtfs, 102 SDslu, 132 SDs, 0 SdLazy, 102 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 3039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...