/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/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:58:25,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:58:25,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:58:25,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:58:25,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:58:25,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:58:25,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:58:25,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:58:25,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:58:25,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:58:25,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:58:25,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:58:25,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:58:25,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:58:25,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:58:25,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:58:25,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:58:25,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:58:25,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:58:25,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:58:25,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:58:25,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:58:25,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:58:25,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:58:25,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-14 22:58:25,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:58:25,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:58:25,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:58:25,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:58:25,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:58:25,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:58:25,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:58:25,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:58:25,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:58:25,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:58:25,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:58:25,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:58:25,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:58:25,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:58:25,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:58:25,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:58:25,215 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:58:25,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:58:25,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:58:25,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:58:25,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:58:25,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:58:25,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:58:25,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:58:25,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:58:25,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:58:25,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:58:25,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:58:25,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:58:25,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:58:25,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:58:25,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:58:25,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:58:25,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:58:25,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:58:25,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:58:25,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:58:25,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:58:25,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:58:25,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:58:25,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:58:25,699 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:58:25,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-09-14 22:58:25,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4875463f8/c32a347eb3044fb9b2bcbb9f3521c3fd/FLAG981e5134c [2020-09-14 22:58:26,426 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:58:26,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-09-14 22:58:26,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4875463f8/c32a347eb3044fb9b2bcbb9f3521c3fd/FLAG981e5134c [2020-09-14 22:58:26,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4875463f8/c32a347eb3044fb9b2bcbb9f3521c3fd [2020-09-14 22:58:26,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:58:26,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:58:26,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:58:26,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:58:26,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:58:26,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:58:26" (1/1) ... [2020-09-14 22:58:26,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:26, skipping insertion in model container [2020-09-14 22:58:26,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:58:26" (1/1) ... [2020-09-14 22:58:26,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:58:26,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:58:27,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:58:27,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:58:27,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:58:27,499 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:58:27,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27 WrapperNode [2020-09-14 22:58:27,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:58:27,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:58:27,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:58:27,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:58:27,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:58:27,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:58:27,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:58:27,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:58:27,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... [2020-09-14 22:58:27,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:58:27,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:58:27,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:58:27,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:58:27,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:58:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:58:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:58:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:58:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:58:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:58:27,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:58:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:58:27,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:58:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:58:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:58:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-14 22:58:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-14 22:58:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:58:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:58:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:58:27,699 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:58:28,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:58:28,152 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:58:28,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:58:28 BoogieIcfgContainer [2020-09-14 22:58:28,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:58:28,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:58:28,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:58:28,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:58:28,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:58:26" (1/3) ... [2020-09-14 22:58:28,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3d8c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:58:28, skipping insertion in model container [2020-09-14 22:58:28,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:58:27" (2/3) ... [2020-09-14 22:58:28,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3d8c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:58:28, skipping insertion in model container [2020-09-14 22:58:28,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:58:28" (3/3) ... [2020-09-14 22:58:28,169 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-09-14 22:58:28,181 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:58:28,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:58:28,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:58:28,194 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:58:28,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,228 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,230 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,230 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,230 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,231 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,232 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,232 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,234 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,234 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,234 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,234 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,235 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,235 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,241 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,253 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:58:28,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-14 22:58:28,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:58:28,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:58:28,302 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:58:28,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:58:28,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:58:28,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:58:28,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:58:28,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:58:28,323 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-09-14 22:58:28,325 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-14 22:58:28,379 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-14 22:58:28,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:58:28,385 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-14 22:58:28,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-09-14 22:58:28,416 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-09-14 22:58:28,417 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:58:28,417 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-14 22:58:28,420 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-14 22:58:28,421 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:58:30,348 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-09-14 22:58:30,618 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-09-14 22:58:30,618 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-09-14 22:58:30,623 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-09-14 22:58:30,670 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-09-14 22:58:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-09-14 22:58:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:58:30,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:30,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:30,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:30,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:30,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-09-14 22:58:30,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:30,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027637892] [2020-09-14 22:58:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:31,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027637892] [2020-09-14 22:58:31,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:31,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:58:31,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740134284] [2020-09-14 22:58:31,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:58:31,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:58:31,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:58:31,072 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-09-14 22:58:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:31,170 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-09-14 22:58:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:58:31,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:58:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:31,202 INFO L225 Difference]: With dead ends: 670 [2020-09-14 22:58:31,202 INFO L226 Difference]: Without dead ends: 526 [2020-09-14 22:58:31,204 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 [2020-09-14 22:58:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-09-14 22:58:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-09-14 22:58:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-09-14 22:58:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-09-14 22:58:31,311 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-09-14 22:58:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:31,313 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-09-14 22:58:31,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:58:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-09-14 22:58:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:58:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:31,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:31,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:58:31,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-09-14 22:58:31,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:31,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161636949] [2020-09-14 22:58:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:31,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161636949] [2020-09-14 22:58:31,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:31,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:58:31,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500650275] [2020-09-14 22:58:31,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:58:31,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:31,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:58:31,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:58:31,461 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-09-14 22:58:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:31,500 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-09-14 22:58:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:58:31,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:58:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:31,505 INFO L225 Difference]: With dead ends: 682 [2020-09-14 22:58:31,505 INFO L226 Difference]: Without dead ends: 394 [2020-09-14 22:58:31,506 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 [2020-09-14 22:58:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-14 22:58:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-14 22:58:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-14 22:58:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-09-14 22:58:31,531 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-09-14 22:58:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:31,532 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-09-14 22:58:31,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:58:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-09-14 22:58:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:58:31,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:31,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:31,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:58:31,534 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:31,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-09-14 22:58:31,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:31,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136462827] [2020-09-14 22:58:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:31,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136462827] [2020-09-14 22:58:31,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:58:31,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97946412] [2020-09-14 22:58:31,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:58:31,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:58:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:58:31,658 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-09-14 22:58:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:31,674 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-09-14 22:58:31,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:58:31,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-14 22:58:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:31,678 INFO L225 Difference]: With dead ends: 386 [2020-09-14 22:58:31,678 INFO L226 Difference]: Without dead ends: 386 [2020-09-14 22:58:31,679 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 [2020-09-14 22:58:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-14 22:58:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-09-14 22:58:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-14 22:58:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-09-14 22:58:31,696 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-09-14 22:58:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:31,696 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-09-14 22:58:31,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:58:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-09-14 22:58:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:58:31,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:31,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:31,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:58:31,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:31,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-09-14 22:58:31,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:31,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801381062] [2020-09-14 22:58:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:31,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801381062] [2020-09-14 22:58:31,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:31,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:58:31,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437871808] [2020-09-14 22:58:31,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:58:31,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:58:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:58:31,756 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-09-14 22:58:31,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:31,774 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-09-14 22:58:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:58:31,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-14 22:58:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:31,778 INFO L225 Difference]: With dead ends: 466 [2020-09-14 22:58:31,779 INFO L226 Difference]: Without dead ends: 402 [2020-09-14 22:58:31,780 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 [2020-09-14 22:58:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-14 22:58:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-09-14 22:58:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-09-14 22:58:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-09-14 22:58:31,794 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-09-14 22:58:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:31,795 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-09-14 22:58:31,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:58:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-09-14 22:58:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:58:31,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:31,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:31,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:58:31,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-09-14 22:58:31,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:31,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802001820] [2020-09-14 22:58:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:31,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802001820] [2020-09-14 22:58:31,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:31,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:58:31,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252048984] [2020-09-14 22:58:31,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:58:31,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:31,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:58:31,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:58:31,899 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-09-14 22:58:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:31,915 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-09-14 22:58:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:58:31,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-14 22:58:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:31,918 INFO L225 Difference]: With dead ends: 358 [2020-09-14 22:58:31,918 INFO L226 Difference]: Without dead ends: 358 [2020-09-14 22:58:31,919 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 [2020-09-14 22:58:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-14 22:58:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-14 22:58:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-14 22:58:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-09-14 22:58:31,931 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-09-14 22:58:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:31,932 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-09-14 22:58:31,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:58:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-09-14 22:58:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:58:31,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:31,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:31,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:58:31,934 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-09-14 22:58:31,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:31,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-14 22:58:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-14 22:58:32,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:58:32,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478601368] [2020-09-14 22:58:32,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:58:32,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:58:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:58:32,012 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-09-14 22:58:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:32,046 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-09-14 22:58:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:58:32,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:58:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:32,049 INFO L225 Difference]: With dead ends: 514 [2020-09-14 22:58:32,050 INFO L226 Difference]: Without dead ends: 274 [2020-09-14 22:58:32,050 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 [2020-09-14 22:58:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-14 22:58:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-09-14 22:58:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-14 22:58:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-09-14 22:58:32,061 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-09-14 22:58:32,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:32,061 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-09-14 22:58:32,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:58:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-09-14 22:58:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:58:32,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:32,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:32,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:58:32,063 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:32,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-09-14 22:58:32,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:32,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777885733] [2020-09-14 22:58:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777885733] [2020-09-14 22:58:32,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:58:32,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484780040] [2020-09-14 22:58:32,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:58:32,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:58:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:58:32,195 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-09-14 22:58:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:32,258 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-09-14 22:58:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:58:32,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-14 22:58:32,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:32,261 INFO L225 Difference]: With dead ends: 345 [2020-09-14 22:58:32,261 INFO L226 Difference]: Without dead ends: 252 [2020-09-14 22:58:32,261 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 [2020-09-14 22:58:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-14 22:58:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-09-14 22:58:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-14 22:58:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-09-14 22:58:32,271 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-09-14 22:58:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:32,271 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-09-14 22:58:32,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:58:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-09-14 22:58:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:58:32,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:32,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:32,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:58:32,273 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-09-14 22:58:32,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:32,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492111775] [2020-09-14 22:58:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492111775] [2020-09-14 22:58:32,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:58:32,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821457667] [2020-09-14 22:58:32,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:58:32,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:58:32,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:58:32,443 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-09-14 22:58:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:32,512 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-09-14 22:58:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:58:32,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-14 22:58:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:32,518 INFO L225 Difference]: With dead ends: 278 [2020-09-14 22:58:32,518 INFO L226 Difference]: Without dead ends: 203 [2020-09-14 22:58:32,518 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 [2020-09-14 22:58:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-14 22:58:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-14 22:58:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-14 22:58:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-09-14 22:58:32,527 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-09-14 22:58:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:32,527 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-09-14 22:58:32,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:58:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-09-14 22:58:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 22:58:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:32,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:32,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:58:32,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-09-14 22:58:32,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:32,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421254818] [2020-09-14 22:58:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421254818] [2020-09-14 22:58:32,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:58:32,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666909402] [2020-09-14 22:58:32,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:58:32,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:58:32,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:58:32,657 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-09-14 22:58:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:32,727 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-09-14 22:58:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:58:32,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-14 22:58:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:32,729 INFO L225 Difference]: With dead ends: 200 [2020-09-14 22:58:32,729 INFO L226 Difference]: Without dead ends: 162 [2020-09-14 22:58:32,730 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 [2020-09-14 22:58:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-14 22:58:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-14 22:58:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-14 22:58:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-09-14 22:58:32,736 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-09-14 22:58:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:32,736 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-09-14 22:58:32,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:58:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-09-14 22:58:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 22:58:32,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:32,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:32,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:58:32,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-09-14 22:58:32,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:32,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774854861] [2020-09-14 22:58:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774854861] [2020-09-14 22:58:32,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:58:32,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470958663] [2020-09-14 22:58:32,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:58:32,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:58:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:58:32,809 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-09-14 22:58:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:32,830 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-09-14 22:58:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:58:32,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-14 22:58:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:32,832 INFO L225 Difference]: With dead ends: 194 [2020-09-14 22:58:32,832 INFO L226 Difference]: Without dead ends: 127 [2020-09-14 22:58:32,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:58:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-14 22:58:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-09-14 22:58:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-14 22:58:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-09-14 22:58:32,837 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-09-14 22:58:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:32,839 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-09-14 22:58:32,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:58:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-09-14 22:58:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 22:58:32,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:32,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:32,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 22:58:32,841 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-09-14 22:58:32,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:32,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275561130] [2020-09-14 22:58:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:32,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275561130] [2020-09-14 22:58:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:32,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 22:58:32,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429359889] [2020-09-14 22:58:32,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-14 22:58:32,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-14 22:58:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:58:32,959 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-09-14 22:58:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:33,037 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-09-14 22:58:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-14 22:58:33,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-14 22:58:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:33,038 INFO L225 Difference]: With dead ends: 120 [2020-09-14 22:58:33,039 INFO L226 Difference]: Without dead ends: 71 [2020-09-14 22:58:33,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-14 22:58:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-14 22:58:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-14 22:58:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-14 22:58:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-09-14 22:58:33,042 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-09-14 22:58:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:33,043 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-09-14 22:58:33,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-14 22:58:33,043 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-09-14 22:58:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-14 22:58:33,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:58:33,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:58:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-14 22:58:33,044 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:58:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:58:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-09-14 22:58:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:58:33,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310317862] [2020-09-14 22:58:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:58:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:58:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:58:33,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310317862] [2020-09-14 22:58:33,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:58:33,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:58:33,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585746211] [2020-09-14 22:58:33,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:58:33,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:58:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:58:33,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:58:33,105 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-09-14 22:58:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:58:33,116 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-09-14 22:58:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:58:33,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-14 22:58:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:58:33,117 INFO L225 Difference]: With dead ends: 70 [2020-09-14 22:58:33,117 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:58:33,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:58:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:58:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:58:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:58:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:58:33,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-14 22:58:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:58:33,119 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:58:33,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:58:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:58:33,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:58:33,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-14 22:58:33,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:58:33 BasicIcfg [2020-09-14 22:58:33,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:58:33,126 INFO L168 Benchmark]: Toolchain (without parser) took 6435.02 ms. Allocated memory was 139.5 MB in the beginning and 291.5 MB in the end (delta: 152.0 MB). Free memory was 100.6 MB in the beginning and 167.3 MB in the end (delta: -66.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,127 INFO L168 Benchmark]: CDTParser took 1.50 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.18 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 161.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,130 INFO L168 Benchmark]: Boogie Preprocessor took 40.62 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,131 INFO L168 Benchmark]: RCFGBuilder took 555.48 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 133.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,131 INFO L168 Benchmark]: TraceAbstraction took 4963.79 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 132.4 MB in the beginning and 167.3 MB in the end (delta: -34.9 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:58:33,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.18 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 161.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.62 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.48 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 133.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4963.79 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 132.4 MB in the beginning and 167.3 MB in the end (delta: -34.9 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...