/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/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:17:29,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:17:29,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:17:29,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:17:29,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:17:29,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:17:29,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:17:29,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:17:29,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:17:29,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:17:29,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:17:29,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:17:29,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:17:29,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:17:29,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:17:29,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:17:29,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:17:29,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:17:29,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:17:29,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:17:29,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:17:29,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:17:29,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:17:29,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:17:29,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:17:29,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:17:29,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:17:29,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:17:29,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:17:29,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:17:29,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:17:29,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:17:29,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:17:29,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:17:29,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:17:29,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:17:29,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:17:29,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:17:29,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:17:29,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:17:29,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:17:29,312 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:17:29,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:17:29,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:17:29,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:17:29,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:17:29,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:17:29,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:17:29,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:17:29,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:17:29,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:17:29,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:17:29,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:17:29,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:17:29,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:17:29,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:17:29,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:17:29,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:17:29,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:17:29,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:17:29,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:17:29,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:17:29,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:17:29,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:17:29,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:17:29,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:17:29,773 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:17:29,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-17 00:17:29,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad092d84/b62181f7215c4e41a6e86eaff4479387/FLAG3c3af3f52 [2020-09-17 00:17:30,532 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:17:30,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-17 00:17:30,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad092d84/b62181f7215c4e41a6e86eaff4479387/FLAG3c3af3f52 [2020-09-17 00:17:30,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad092d84/b62181f7215c4e41a6e86eaff4479387 [2020-09-17 00:17:30,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:17:30,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:17:30,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:17:30,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:17:30,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:17:30,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:17:30" (1/1) ... [2020-09-17 00:17:30,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120a6ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:30, skipping insertion in model container [2020-09-17 00:17:30,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:17:30" (1/1) ... [2020-09-17 00:17:30,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:17:30,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:17:31,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:17:31,373 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:17:31,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:17:31,533 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:17:31,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31 WrapperNode [2020-09-17 00:17:31,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:17:31,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:17:31,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:17:31,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:17:31,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:17:31,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:17:31,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:17:31,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:17:31,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... [2020-09-17 00:17:31,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:17:31,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:17:31,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:17:31,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:17:31,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-17 00:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:17:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:17:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:17:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:17:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:17:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:17:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:17:31,717 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:17:32,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:17:32,120 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:17:32,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:17:32 BoogieIcfgContainer [2020-09-17 00:17:32,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:17:32,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:17:32,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:17:32,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:17:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:17:30" (1/3) ... [2020-09-17 00:17:32,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3f96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:17:32, skipping insertion in model container [2020-09-17 00:17:32,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:17:31" (2/3) ... [2020-09-17 00:17:32,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3f96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:17:32, skipping insertion in model container [2020-09-17 00:17:32,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:17:32" (3/3) ... [2020-09-17 00:17:32,135 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-09-17 00:17:32,146 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:17:32,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:17:32,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:17:32,158 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:17:32,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,189 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,200 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,210 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,215 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,216 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,216 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,216 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:17:32,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:17:32,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:17:32,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:17:32,269 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:17:32,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:17:32,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:17:32,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:17:32,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:17:32,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:17:32,286 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-17 00:17:32,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-17 00:17:32,335 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-17 00:17:32,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:17:32,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:17:32,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-17 00:17:32,372 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-17 00:17:32,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:17:32,373 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:17:32,375 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-17 00:17:32,378 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:17:33,837 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-17 00:17:33,924 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-17 00:17:33,924 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-17 00:17:33,929 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-17 00:17:33,955 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-17 00:17:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-17 00:17:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:17:33,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:33,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:33,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-17 00:17:33,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:33,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375322542] [2020-09-17 00:17:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:34,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375322542] [2020-09-17 00:17:34,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:34,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:17:34,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550432817] [2020-09-17 00:17:34,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 00:17:34,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:34,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 00:17:34,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:17:34,215 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-17 00:17:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:34,249 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-17 00:17:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 00:17:34,251 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-17 00:17:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:34,269 INFO L225 Difference]: With dead ends: 274 [2020-09-17 00:17:34,270 INFO L226 Difference]: Without dead ends: 226 [2020-09-17 00:17:34,271 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 [2020-09-17 00:17:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-17 00:17:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-17 00:17:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-17 00:17:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-17 00:17:34,346 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-17 00:17:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:34,347 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-17 00:17:34,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 00:17:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-17 00:17:34,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:17:34,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:34,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:34,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:17:34,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:34,350 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-17 00:17:34,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:34,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435349639] [2020-09-17 00:17:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:34,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435349639] [2020-09-17 00:17:34,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:34,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:17:34,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454014324] [2020-09-17 00:17:34,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:17:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:34,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:17:34,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:17:34,499 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-17 00:17:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:34,536 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-09-17 00:17:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:17:34,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-17 00:17:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:34,540 INFO L225 Difference]: With dead ends: 250 [2020-09-17 00:17:34,540 INFO L226 Difference]: Without dead ends: 202 [2020-09-17 00:17:34,541 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 [2020-09-17 00:17:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-17 00:17:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-17 00:17:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-17 00:17:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-09-17 00:17:34,560 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-09-17 00:17:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:34,560 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-09-17 00:17:34,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:17:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-09-17 00:17:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:17:34,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:34,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:34,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:17:34,563 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-09-17 00:17:34,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:34,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248050082] [2020-09-17 00:17:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:34,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248050082] [2020-09-17 00:17:34,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:34,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:17:34,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405141865] [2020-09-17 00:17:34,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:17:34,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:34,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:17:34,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:17:34,650 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-09-17 00:17:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:34,674 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-09-17 00:17:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:17:34,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-17 00:17:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:34,677 INFO L225 Difference]: With dead ends: 232 [2020-09-17 00:17:34,677 INFO L226 Difference]: Without dead ends: 196 [2020-09-17 00:17:34,678 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 [2020-09-17 00:17:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-17 00:17:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-17 00:17:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-17 00:17:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-17 00:17:34,692 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-17 00:17:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:34,692 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-17 00:17:34,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:17:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-17 00:17:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:17:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:34,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:34,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:17:34,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-17 00:17:34,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:34,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042696332] [2020-09-17 00:17:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:34,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042696332] [2020-09-17 00:17:34,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:34,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:17:34,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978227506] [2020-09-17 00:17:34,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:17:34,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:17:34,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:17:34,784 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-09-17 00:17:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:34,831 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-17 00:17:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:17:34,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-17 00:17:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:34,834 INFO L225 Difference]: With dead ends: 255 [2020-09-17 00:17:34,834 INFO L226 Difference]: Without dead ends: 150 [2020-09-17 00:17:34,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 00:17:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-17 00:17:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-17 00:17:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-17 00:17:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-17 00:17:34,843 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-17 00:17:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:34,843 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-17 00:17:34,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:17:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-17 00:17:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:17:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:34,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:34,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:17:34,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-17 00:17:34,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:34,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811648538] [2020-09-17 00:17:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:34,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811648538] [2020-09-17 00:17:34,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:34,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:17:34,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360446461] [2020-09-17 00:17:34,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:17:34,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:17:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:17:34,948 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-09-17 00:17:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:34,999 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-09-17 00:17:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:17:35,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:17:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,004 INFO L225 Difference]: With dead ends: 164 [2020-09-17 00:17:35,004 INFO L226 Difference]: Without dead ends: 128 [2020-09-17 00:17:35,006 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 [2020-09-17 00:17:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-17 00:17:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-17 00:17:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-17 00:17:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-09-17 00:17:35,013 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-09-17 00:17:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,018 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-09-17 00:17:35,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:17:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-09-17 00:17:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:17:35,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:35,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:35,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:17:35,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:35,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-09-17 00:17:35,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:35,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883874667] [2020-09-17 00:17:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:35,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883874667] [2020-09-17 00:17:35,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:35,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:17:35,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354475802] [2020-09-17 00:17:35,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:17:35,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:35,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:17:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:17:35,107 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-09-17 00:17:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:35,175 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-09-17 00:17:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:17:35,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 00:17:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,177 INFO L225 Difference]: With dead ends: 116 [2020-09-17 00:17:35,177 INFO L226 Difference]: Without dead ends: 92 [2020-09-17 00:17:35,178 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 [2020-09-17 00:17:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-17 00:17:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-17 00:17:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-17 00:17:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-17 00:17:35,182 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-09-17 00:17:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,182 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-17 00:17:35,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:17:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-17 00:17:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:17:35,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:35,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:35,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:17:35,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-17 00:17:35,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:35,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197363496] [2020-09-17 00:17:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:35,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197363496] [2020-09-17 00:17:35,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:35,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:17:35,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906905656] [2020-09-17 00:17:35,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:17:35,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:35,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:17:35,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:17:35,289 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-17 00:17:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:35,310 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-17 00:17:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:17:35,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 00:17:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,312 INFO L225 Difference]: With dead ends: 120 [2020-09-17 00:17:35,312 INFO L226 Difference]: Without dead ends: 94 [2020-09-17 00:17:35,313 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 [2020-09-17 00:17:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-17 00:17:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-17 00:17:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-17 00:17:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-17 00:17:35,317 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-17 00:17:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,317 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-17 00:17:35,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:17:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-17 00:17:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:17:35,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:35,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:35,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:17:35,319 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-17 00:17:35,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:35,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15505668] [2020-09-17 00:17:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:35,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15505668] [2020-09-17 00:17:35,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:35,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 00:17:35,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838510872] [2020-09-17 00:17:35,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 00:17:35,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:35,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 00:17:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-17 00:17:35,430 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-09-17 00:17:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:35,596 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-09-17 00:17:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-17 00:17:35,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-17 00:17:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,598 INFO L225 Difference]: With dead ends: 119 [2020-09-17 00:17:35,598 INFO L226 Difference]: Without dead ends: 76 [2020-09-17 00:17:35,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-17 00:17:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-17 00:17:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-09-17 00:17:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-17 00:17:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-09-17 00:17:35,604 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-09-17 00:17:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,605 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-09-17 00:17:35,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 00:17:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-09-17 00:17:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:17:35,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:35,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:35,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:17:35,610 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-17 00:17:35,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:35,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984259820] [2020-09-17 00:17:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:35,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984259820] [2020-09-17 00:17:35,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:35,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 00:17:35,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34796345] [2020-09-17 00:17:35,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:17:35,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:35,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:17:35,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:17:35,754 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-09-17 00:17:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:35,796 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-09-17 00:17:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:17:35,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-17 00:17:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,797 INFO L225 Difference]: With dead ends: 65 [2020-09-17 00:17:35,797 INFO L226 Difference]: Without dead ends: 28 [2020-09-17 00:17:35,798 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 [2020-09-17 00:17:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-17 00:17:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-17 00:17:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-17 00:17:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-09-17 00:17:35,800 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-09-17 00:17:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,800 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-09-17 00:17:35,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:17:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-09-17 00:17:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:17:35,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:17:35,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:17:35,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:17:35,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:17:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:17:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-09-17 00:17:35,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:17:35,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689671777] [2020-09-17 00:17:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:17:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:17:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:17:35,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689671777] [2020-09-17 00:17:35,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:17:35,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:17:35,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206459695] [2020-09-17 00:17:35,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:17:35,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:17:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:17:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:17:35,903 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 5 states. [2020-09-17 00:17:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:17:35,934 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-17 00:17:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:17:35,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 00:17:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:17:35,935 INFO L225 Difference]: With dead ends: 27 [2020-09-17 00:17:35,935 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:17:35,935 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 [2020-09-17 00:17:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:17:35,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:17:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:17:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:17:35,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-17 00:17:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:17:35,937 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:17:35,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:17:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:17:35,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:17:35,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 00:17:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:17:35 BasicIcfg [2020-09-17 00:17:35,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:17:35,946 INFO L168 Benchmark]: Toolchain (without parser) took 5192.00 ms. Allocated memory was 147.8 MB in the beginning and 244.3 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 109.6 MB in the end (delta: -6.6 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,947 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.82 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 161.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 204.5 MB. Free memory was 161.4 MB in the beginning and 159.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,954 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,955 INFO L168 Benchmark]: RCFGBuilder took 499.52 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,961 INFO L168 Benchmark]: TraceAbstraction took 3816.63 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 135.6 MB in the beginning and 109.6 MB in the end (delta: 26.1 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:17:35,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.82 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 161.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 204.5 MB. Free memory was 161.4 MB in the beginning and 159.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 204.5 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.52 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3816.63 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 135.6 MB in the beginning and 109.6 MB in the end (delta: 26.1 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 196 SDtfs, 191 SDslu, 357 SDs, 0 SdLazy, 212 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...