/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:07,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:07,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:07,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:07,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:07,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:07,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:07,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:07,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:07,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:07,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:07,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:07,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:07,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:07,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:07,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:07,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:07,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:07,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:07,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:07,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:07,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:07,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:07,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:07,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:07,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:07,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:07,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:07,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:07,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:07,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:07,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:07,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:07,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:07,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:07,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:07,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:07,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:07,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:07,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:07,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:07,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:24:07,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:07,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:07,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:07,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:07,380 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:07,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:07,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:07,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:07,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:07,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:07,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:07,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:07,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:07,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:07,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:07,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:07,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:07,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:07,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:07,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:07,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:07,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:07,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:07,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:07,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:07,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:07,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:07,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:07,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:07,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:07,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:07,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:07,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:07,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:07,692 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:07,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 02:24:07,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebd9526c/bb9fa35f513143869d1efc4cf877f4ae/FLAGe450e335a [2020-04-18 02:24:08,339 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:08,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-04-18 02:24:08,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebd9526c/bb9fa35f513143869d1efc4cf877f4ae/FLAGe450e335a [2020-04-18 02:24:08,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebd9526c/bb9fa35f513143869d1efc4cf877f4ae [2020-04-18 02:24:08,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:08,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:08,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:08,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:08,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:08,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:08" (1/1) ... [2020-04-18 02:24:08,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617b8745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:08, skipping insertion in model container [2020-04-18 02:24:08,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:08" (1/1) ... [2020-04-18 02:24:08,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:08,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:09,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:09,188 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:09,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:09,359 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:09,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09 WrapperNode [2020-04-18 02:24:09,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:09,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:09,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:09,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:09,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:09,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:09,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:09,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:09,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (1/1) ... [2020-04-18 02:24:09,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:09,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:09,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:09,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:09,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (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 [2020-04-18 02:24:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:09,531 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:24:09,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:09,954 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:09,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:09 BoogieIcfgContainer [2020-04-18 02:24:09,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:09,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:09,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:09,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:09,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:08" (1/3) ... [2020-04-18 02:24:09,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119a7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:09, skipping insertion in model container [2020-04-18 02:24:09,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:09" (2/3) ... [2020-04-18 02:24:09,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119a7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:09, skipping insertion in model container [2020-04-18 02:24:09,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:09" (3/3) ... [2020-04-18 02:24:09,969 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-04-18 02:24:09,980 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:09,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:09,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:09,990 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:10,019 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,019 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,019 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,020 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,021 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,021 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,022 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,022 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,022 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,022 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,023 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,024 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,025 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,026 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,026 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,026 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,029 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,030 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,038 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,040 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,052 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,054 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,054 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,058 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,058 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,058 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,059 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:10,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:24:10,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:10,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:10,099 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:10,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:10,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:10,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:10,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:10,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:10,116 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:10,118 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:10,165 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:24:10,166 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:10,171 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:24:10,174 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:10,204 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:24:10,204 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:10,205 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:24:10,207 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:24:10,208 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:11,690 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 02:24:11,690 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:24:11,694 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:24:11,724 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:24:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:24:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:24:11,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:11,741 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:11,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 02:24:11,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:11,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103167643] [2020-04-18 02:24:11,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:11,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103167643] [2020-04-18 02:24:11,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:11,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:24:11,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056095375] [2020-04-18 02:24:12,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:12,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:12,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:12,022 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:24:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,095 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:24:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:12,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:24:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,138 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:24:12,138 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:24:12,142 INFO L678 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 [2020-04-18 02:24:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:24:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:24:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:24:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:24:12,223 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:24:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,224 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:24:12,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:24:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:24:12,226 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,226 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 02:24:12,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586174025] [2020-04-18 02:24:12,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:12,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586174025] [2020-04-18 02:24:12,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:12,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:12,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470855120] [2020-04-18 02:24:12,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:12,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:12,372 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:24:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,409 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:24:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:12,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:24:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,412 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:24:12,412 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:24:12,413 INFO L678 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 [2020-04-18 02:24:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:24:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:24:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:24:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:24:12,430 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:24:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,430 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:24:12,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:24:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:12,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,432 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,433 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 02:24:12,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562091201] [2020-04-18 02:24:12,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:12,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562091201] [2020-04-18 02:24:12,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:12,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644015282] [2020-04-18 02:24:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:12,503 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:24:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,553 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:24:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:12,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:24:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,556 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:24:12,556 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:24:12,557 INFO L678 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 [2020-04-18 02:24:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:24:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:24:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:24:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:24:12,588 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:24:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,588 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:24:12,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:24:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:12,590 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,590 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,590 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 02:24:12,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366836137] [2020-04-18 02:24:12,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:12,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366836137] [2020-04-18 02:24:12,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:12,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:24:12,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138530675] [2020-04-18 02:24:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:12,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:12,660 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-18 02:24:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,668 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 02:24:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:12,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:24:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,671 INFO L225 Difference]: With dead ends: 144 [2020-04-18 02:24:12,671 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:24:12,671 INFO L678 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 [2020-04-18 02:24:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:24:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:24:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:24:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:24:12,680 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 02:24:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,681 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:24:12,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:24:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:12,682 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,683 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 02:24:12,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566831296] [2020-04-18 02:24:12,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:12,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566831296] [2020-04-18 02:24:12,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:12,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:12,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403430790] [2020-04-18 02:24:12,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:12,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:12,750 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:24:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,790 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:24:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:12,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,792 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:24:12,792 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:24:12,792 INFO L678 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 [2020-04-18 02:24:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:24:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:24:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:24:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:24:12,799 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:24:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,799 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:24:12,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:24:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:12,801 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,801 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 02:24:12,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373207862] [2020-04-18 02:24:12,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:12,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373207862] [2020-04-18 02:24:12,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:12,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:12,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031510281] [2020-04-18 02:24:12,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:12,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:12,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:12,884 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:24:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:12,940 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:24:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:12,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:24:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:12,942 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:24:12,942 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:24:12,943 INFO L678 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 [2020-04-18 02:24:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:24:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:24:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:24:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:24:12,947 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:24:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:12,947 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:24:12,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:24:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:12,954 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:12,954 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:12,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:12,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 02:24:12,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:12,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629907083] [2020-04-18 02:24:12,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:13,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629907083] [2020-04-18 02:24:13,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:13,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:13,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078176140] [2020-04-18 02:24:13,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:13,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:13,015 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:24:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:13,027 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:24:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:13,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:24:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:13,028 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:24:13,029 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:24:13,029 INFO L678 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 [2020-04-18 02:24:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:24:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:24:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:24:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:24:13,033 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:24:13,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:13,033 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:24:13,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:24:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:13,034 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:13,035 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:13,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:13,035 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 02:24:13,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:13,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334376242] [2020-04-18 02:24:13,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:13,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334376242] [2020-04-18 02:24:13,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:13,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:13,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914768172] [2020-04-18 02:24:13,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:13,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:13,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:13,075 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-18 02:24:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:13,095 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-18 02:24:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:13,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:13,097 INFO L225 Difference]: With dead ends: 114 [2020-04-18 02:24:13,097 INFO L226 Difference]: Without dead ends: 76 [2020-04-18 02:24:13,097 INFO L678 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 [2020-04-18 02:24:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-18 02:24:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-18 02:24:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-18 02:24:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-18 02:24:13,101 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-18 02:24:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:13,101 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-18 02:24:13,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-18 02:24:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:13,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:13,102 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:13,102 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:13,103 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-18 02:24:13,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:13,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079281311] [2020-04-18 02:24:13,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:13,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079281311] [2020-04-18 02:24:13,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:13,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:13,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802089428] [2020-04-18 02:24:13,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:13,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:13,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:13,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:13,156 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-18 02:24:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:13,210 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-18 02:24:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:13,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:24:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:13,211 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:24:13,211 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:13,211 INFO L678 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 [2020-04-18 02:24:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:13,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:24:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:13,213 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:13,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:13,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:13,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:13 BasicIcfg [2020-04-18 02:24:13,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:13,221 INFO L168 Benchmark]: Toolchain (without parser) took 4617.28 ms. Allocated memory was 142.1 MB in the beginning and 250.1 MB in the end (delta: 108.0 MB). Free memory was 100.3 MB in the beginning and 92.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,223 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 142.1 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.96 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 98.3 MB in the beginning and 156.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.26 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,231 INFO L168 Benchmark]: Boogie Preprocessor took 33.47 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 152.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,232 INFO L168 Benchmark]: RCFGBuilder took 513.57 ms. Allocated memory is still 201.9 MB. Free memory was 152.7 MB in the beginning and 131.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,233 INFO L168 Benchmark]: TraceAbstraction took 3258.69 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 130.4 MB in the beginning and 92.9 MB in the end (delta: 37.5 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:13,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 142.1 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.96 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 98.3 MB in the beginning and 156.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.26 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.47 ms. Allocated memory is still 201.9 MB. Free memory was 154.8 MB in the beginning and 152.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.57 ms. Allocated memory is still 201.9 MB. Free memory was 152.7 MB in the beginning and 131.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3258.69 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 130.4 MB in the beginning and 92.9 MB in the end (delta: 37.5 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...