/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/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 23:08:10,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 23:08:10,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 23:08:10,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 23:08:10,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 23:08:10,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 23:08:10,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 23:08:10,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 23:08:10,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 23:08:10,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 23:08:10,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 23:08:10,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 23:08:10,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 23:08:10,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 23:08:10,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 23:08:10,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 23:08:10,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 23:08:10,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 23:08:10,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 23:08:10,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 23:08:10,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 23:08:10,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 23:08:10,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 23:08:10,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 23:08:10,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 23:08:10,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 23:08:10,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 23:08:10,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 23:08:10,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 23:08:10,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 23:08:10,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 23:08:10,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 23:08:10,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 23:08:10,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 23:08:10,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 23:08:10,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 23:08:10,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 23:08:10,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 23:08:10,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 23:08:10,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 23:08:10,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 23:08:10,812 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 23:08:10,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 23:08:10,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 23:08:10,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 23:08:10,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 23:08:10,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 23:08:10,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 23:08:10,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 23:08:10,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 23:08:10,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 23:08:10,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 23:08:10,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 23:08:10,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 23:08:10,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 23:08:10,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 23:08:10,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 23:08:10,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 23:08:10,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 23:08:10,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 23:08:10,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 23:08:10,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 23:08:10,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 23:08:10,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:08:10,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 23:08:10,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 23:08:10,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 23:08:10,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 23:08:10,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 23:08:10,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 23:08:10,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 23:08:10,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 23:08:11,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 23:08:11,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 23:08:11,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 23:08:11,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 23:08:11,344 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 23:08:11,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-14 23:08:11,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e5eb3aa3/56865e5bbf214201a9c9829bbd9d435a/FLAGeab572fe8 [2020-09-14 23:08:12,058 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 23:08:12,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-14 23:08:12,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e5eb3aa3/56865e5bbf214201a9c9829bbd9d435a/FLAGeab572fe8 [2020-09-14 23:08:12,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e5eb3aa3/56865e5bbf214201a9c9829bbd9d435a [2020-09-14 23:08:12,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 23:08:12,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 23:08:12,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 23:08:12,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 23:08:12,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 23:08:12,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:08:12" (1/1) ... [2020-09-14 23:08:12,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a7e5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:12, skipping insertion in model container [2020-09-14 23:08:12,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:08:12" (1/1) ... [2020-09-14 23:08:12,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 23:08:12,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 23:08:12,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:08:12,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 23:08:13,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:08:13,128 INFO L208 MainTranslator]: Completed translation [2020-09-14 23:08:13,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13 WrapperNode [2020-09-14 23:08:13,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 23:08:13,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 23:08:13,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 23:08:13,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 23:08:13,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 23:08:13,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 23:08:13,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 23:08:13,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 23:08:13,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (1/1) ... [2020-09-14 23:08:13,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 23:08:13,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 23:08:13,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 23:08:13,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 23:08:13,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (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 23:08:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 23:08:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 23:08:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 23:08:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 23:08:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 23:08:13,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 23:08:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 23:08:13,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 23:08:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 23:08:13,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 23:08:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 23:08:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 23:08:13,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 23:08:13,334 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 23:08:13,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 23:08:13,716 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 23:08:13,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:08:13 BoogieIcfgContainer [2020-09-14 23:08:13,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 23:08:13,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 23:08:13,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 23:08:13,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 23:08:13,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 11:08:12" (1/3) ... [2020-09-14 23:08:13,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55acf5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:08:13, skipping insertion in model container [2020-09-14 23:08:13,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:08:13" (2/3) ... [2020-09-14 23:08:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55acf5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:08:13, skipping insertion in model container [2020-09-14 23:08:13,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:08:13" (3/3) ... [2020-09-14 23:08:13,733 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-09-14 23:08:13,745 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 23:08:13,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 23:08:13,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 23:08:13,757 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 23:08:13,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,794 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,794 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,814 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:08:13,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 23:08:13,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 23:08:13,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 23:08:13,874 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 23:08:13,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 23:08:13,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 23:08:13,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 23:08:13,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 23:08:13,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 23:08:13,894 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-14 23:08:13,897 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:08:13,950 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:08:13,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:08:13,957 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:08:13,960 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:08:13,983 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:08:13,983 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:08:13,984 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:08:13,987 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 23:08:13,988 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 23:08:15,541 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-14 23:08:15,542 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-14 23:08:15,547 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-14 23:08:15,578 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-14 23:08:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-14 23:08:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 23:08:15,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:15,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:15,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-14 23:08:15,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:15,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420358233] [2020-09-14 23:08:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:15,817 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 23:08:15,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420358233] [2020-09-14 23:08:15,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:15,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:08:15,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445663353] [2020-09-14 23:08:15,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-14 23:08:15,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:15,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-14 23:08:15,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-14 23:08:15,850 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-14 23:08:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:15,890 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-14 23:08:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-14 23:08:15,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-14 23:08:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:15,918 INFO L225 Difference]: With dead ends: 362 [2020-09-14 23:08:15,918 INFO L226 Difference]: Without dead ends: 298 [2020-09-14 23:08:15,920 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 23:08:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-14 23:08:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-14 23:08:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-14 23:08:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-14 23:08:16,012 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-14 23:08:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:16,014 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-14 23:08:16,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-14 23:08:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-14 23:08:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:08:16,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:16,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:16,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 23:08:16,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-14 23:08:16,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:16,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334920775] [2020-09-14 23:08:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:16,239 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 23:08:16,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334920775] [2020-09-14 23:08:16,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:16,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:08:16,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179545330] [2020-09-14 23:08:16,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:08:16,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:08:16,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:08:16,246 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-14 23:08:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:16,351 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-14 23:08:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 23:08:16,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-14 23:08:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:16,357 INFO L225 Difference]: With dead ends: 330 [2020-09-14 23:08:16,358 INFO L226 Difference]: Without dead ends: 266 [2020-09-14 23:08:16,359 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 23:08:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-14 23:08:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-14 23:08:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-14 23:08:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-14 23:08:16,381 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-14 23:08:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:16,382 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-14 23:08:16,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:08:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-14 23:08:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 23:08:16,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:16,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:16,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 23:08:16,384 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:16,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-09-14 23:08:16,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:16,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888675994] [2020-09-14 23:08:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:16,505 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 23:08:16,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888675994] [2020-09-14 23:08:16,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:16,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:08:16,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275018390] [2020-09-14 23:08:16,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:08:16,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:16,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:08:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:08:16,508 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-09-14 23:08:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:16,615 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-09-14 23:08:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-14 23:08:16,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-14 23:08:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:16,618 INFO L225 Difference]: With dead ends: 338 [2020-09-14 23:08:16,618 INFO L226 Difference]: Without dead ends: 194 [2020-09-14 23:08:16,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-14 23:08:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-14 23:08:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-14 23:08:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-14 23:08:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-09-14 23:08:16,631 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-09-14 23:08:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:16,632 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-09-14 23:08:16,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:08:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-09-14 23:08:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 23:08:16,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:16,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:16,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 23:08:16,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-09-14 23:08:16,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:16,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757184577] [2020-09-14 23:08:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:16,740 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 23:08:16,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757184577] [2020-09-14 23:08:16,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:16,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:08:16,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660767624] [2020-09-14 23:08:16,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:08:16,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:16,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:08:16,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:08:16,743 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-09-14 23:08:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:16,781 INFO L93 Difference]: Finished difference Result 213 states and 497 transitions. [2020-09-14 23:08:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:08:16,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 23:08:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:16,783 INFO L225 Difference]: With dead ends: 213 [2020-09-14 23:08:16,783 INFO L226 Difference]: Without dead ends: 167 [2020-09-14 23:08:16,784 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 23:08:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-14 23:08:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-09-14 23:08:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-14 23:08:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 392 transitions. [2020-09-14 23:08:16,793 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 392 transitions. Word has length 12 [2020-09-14 23:08:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:16,793 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 392 transitions. [2020-09-14 23:08:16,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:08:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 392 transitions. [2020-09-14 23:08:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 23:08:16,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:16,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:16,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 23:08:16,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:16,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-09-14 23:08:16,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:16,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655783758] [2020-09-14 23:08:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:08:16,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655783758] [2020-09-14 23:08:16,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:16,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:08:16,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867160781] [2020-09-14 23:08:16,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:08:16,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:16,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:08:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:08:16,897 INFO L87 Difference]: Start difference. First operand 167 states and 392 transitions. Second operand 5 states. [2020-09-14 23:08:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:16,980 INFO L93 Difference]: Finished difference Result 147 states and 311 transitions. [2020-09-14 23:08:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:08:16,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 23:08:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:16,987 INFO L225 Difference]: With dead ends: 147 [2020-09-14 23:08:16,987 INFO L226 Difference]: Without dead ends: 116 [2020-09-14 23:08:16,989 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 23:08:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-14 23:08:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-14 23:08:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-14 23:08:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 239 transitions. [2020-09-14 23:08:16,997 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 239 transitions. Word has length 13 [2020-09-14 23:08:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:16,997 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 239 transitions. [2020-09-14 23:08:16,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:08:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 239 transitions. [2020-09-14 23:08:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 23:08:17,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:17,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:08:17,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 23:08:17,002 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-09-14 23:08:17,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:17,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232575282] [2020-09-14 23:08:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:17,108 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 23:08:17,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232575282] [2020-09-14 23:08:17,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:17,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 23:08:17,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767248722] [2020-09-14 23:08:17,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:08:17,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:17,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:08:17,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:08:17,111 INFO L87 Difference]: Start difference. First operand 116 states and 239 transitions. Second operand 6 states. [2020-09-14 23:08:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:17,163 INFO L93 Difference]: Finished difference Result 101 states and 207 transitions. [2020-09-14 23:08:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 23:08:17,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 23:08:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:17,164 INFO L225 Difference]: With dead ends: 101 [2020-09-14 23:08:17,165 INFO L226 Difference]: Without dead ends: 91 [2020-09-14 23:08:17,165 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 23:08:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-14 23:08:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-09-14 23:08:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-14 23:08:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 189 transitions. [2020-09-14 23:08:17,170 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 189 transitions. Word has length 15 [2020-09-14 23:08:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:17,170 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 189 transitions. [2020-09-14 23:08:17,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:08:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 189 transitions. [2020-09-14 23:08:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 23:08:17,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:17,172 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 23:08:17,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 23:08:17,172 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-09-14 23:08:17,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:17,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589905686] [2020-09-14 23:08:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:17,262 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 23:08:17,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589905686] [2020-09-14 23:08:17,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:17,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:08:17,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099694950] [2020-09-14 23:08:17,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:08:17,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:08:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:08:17,265 INFO L87 Difference]: Start difference. First operand 91 states and 189 transitions. Second operand 4 states. [2020-09-14 23:08:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:17,286 INFO L93 Difference]: Finished difference Result 126 states and 254 transitions. [2020-09-14 23:08:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:08:17,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-14 23:08:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:17,288 INFO L225 Difference]: With dead ends: 126 [2020-09-14 23:08:17,288 INFO L226 Difference]: Without dead ends: 61 [2020-09-14 23:08:17,289 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 23:08:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-14 23:08:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-14 23:08:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-14 23:08:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 111 transitions. [2020-09-14 23:08:17,292 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 111 transitions. Word has length 18 [2020-09-14 23:08:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:17,293 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 111 transitions. [2020-09-14 23:08:17,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:08:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 111 transitions. [2020-09-14 23:08:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 23:08:17,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:08:17,294 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 23:08:17,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 23:08:17,295 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:08:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:08:17,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1469301908, now seen corresponding path program 2 times [2020-09-14 23:08:17,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:08:17,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675742610] [2020-09-14 23:08:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:08:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:08:17,422 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 23:08:17,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675742610] [2020-09-14 23:08:17,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:08:17,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:08:17,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494465046] [2020-09-14 23:08:17,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:08:17,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:08:17,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:08:17,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:08:17,426 INFO L87 Difference]: Start difference. First operand 61 states and 111 transitions. Second operand 5 states. [2020-09-14 23:08:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:08:17,455 INFO L93 Difference]: Finished difference Result 60 states and 110 transitions. [2020-09-14 23:08:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:08:17,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-14 23:08:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:08:17,455 INFO L225 Difference]: With dead ends: 60 [2020-09-14 23:08:17,456 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 23:08:17,456 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 23:08:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 23:08:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 23:08:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 23:08:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 23:08:17,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-14 23:08:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:08:17,458 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 23:08:17,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:08:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 23:08:17,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 23:08:17,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 23:08:17,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 11:08:17 BasicIcfg [2020-09-14 23:08:17,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 23:08:17,471 INFO L168 Benchmark]: Toolchain (without parser) took 5138.89 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 100.7 MB in the beginning and 163.3 MB in the end (delta: -62.6 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,472 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.04 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.0 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.63 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,475 INFO L168 Benchmark]: Boogie Preprocessor took 30.63 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,476 INFO L168 Benchmark]: RCFGBuilder took 485.73 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 133.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,477 INFO L168 Benchmark]: TraceAbstraction took 3743.15 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 133.7 MB in the beginning and 163.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-14 23:08:17,482 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.04 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.0 MB in the end (delta: -60.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.63 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.63 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.73 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 133.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3743.15 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 133.7 MB in the beginning and 163.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 167 SDtfs, 222 SDslu, 311 SDs, 0 SdLazy, 153 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3393 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...