/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:03:00,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:03:00,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:03:00,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:03:00,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:03:00,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:03:00,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:03:00,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:03:00,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:03:00,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:03:00,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:03:00,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:03:00,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:03:00,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:03:00,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:03:00,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:03:00,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:03:00,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:03:00,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:03:00,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:03:00,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:03:00,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:03:00,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:03:00,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:03:00,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:03:00,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:03:00,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:03:00,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:03:00,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:03:00,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:03:00,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:03:00,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:03:00,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:03:00,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:03:00,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:03:00,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:03:00,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:03:00,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:03:00,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:03:00,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:03:00,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:03:00,309 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-SemanticLbe.epf [2020-04-17 22:03:00,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:03:00,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:03:00,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:03:00,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:03:00,335 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:03:00,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:03:00,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:03:00,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:03:00,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:03:00,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:03:00,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:03:00,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:03:00,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:03:00,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:03:00,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:03:00,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:03:00,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:03:00,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:03:00,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:03:00,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:03:00,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:03:00,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:03:00,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:03:00,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:03:00,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:03:00,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:03:00,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:03:00,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:03:00,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:03:00,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:03:00,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:03:00,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:03:00,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:03:00,652 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:03:00,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-17 22:03:00,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e354bcc03/315c550619144c40b1b4ccfd42cc1582/FLAGc2d4f8304 [2020-04-17 22:03:01,303 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:03:01,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-17 22:03:01,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e354bcc03/315c550619144c40b1b4ccfd42cc1582/FLAGc2d4f8304 [2020-04-17 22:03:01,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e354bcc03/315c550619144c40b1b4ccfd42cc1582 [2020-04-17 22:03:01,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:03:01,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:03:01,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:03:01,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:03:01,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:03:01,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:03:01" (1/1) ... [2020-04-17 22:03:01,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:01, skipping insertion in model container [2020-04-17 22:03:01,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:03:01" (1/1) ... [2020-04-17 22:03:01,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:03:01,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:03:02,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:03:02,201 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:03:02,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:03:02,361 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:03:02,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02 WrapperNode [2020-04-17 22:03:02,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:03:02,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:03:02,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:03:02,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:03:02,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:03:02,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:03:02,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:03:02,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:03:02,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (1/1) ... [2020-04-17 22:03:02,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:03:02,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:03:02,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:03:02,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:03:02,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (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 [2020-04-17 22:03:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:03:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:03:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:03:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:03:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:03:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:03:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:03:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:03:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:03:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:03:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:03:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:03:02,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:03:02,520 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:03:02,907 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:03:02,908 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:03:02,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:03:02 BoogieIcfgContainer [2020-04-17 22:03:02,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:03:02,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:03:02,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:03:02,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:03:02,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:03:01" (1/3) ... [2020-04-17 22:03:02,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:03:02, skipping insertion in model container [2020-04-17 22:03:02,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:03:02" (2/3) ... [2020-04-17 22:03:02,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:03:02, skipping insertion in model container [2020-04-17 22:03:02,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:03:02" (3/3) ... [2020-04-17 22:03:02,924 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-04-17 22:03:02,933 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:03:02,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:03:02,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:03:02,942 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:03:02,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,977 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,978 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,980 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,980 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,981 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,982 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,982 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,982 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,983 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,984 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,984 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,984 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,985 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,985 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,985 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,994 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,995 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,995 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:02,995 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,004 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,005 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,005 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,006 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,016 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,016 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,016 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,017 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:03:03,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:03:03,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:03:03,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:03:03,066 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:03:03,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:03:03,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:03:03,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:03:03,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:03:03,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:03:03,093 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:03,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:03,152 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:03:03,153 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:03:03,159 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:03:03,165 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 22:03:03,191 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 22:03:03,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:03:03,192 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:03:03,194 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:03:03,195 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:03:04,803 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 22:03:04,929 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 22:03:04,929 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 22:03:04,933 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:03:04,962 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:03:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:03:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:03:04,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:04,974 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:04,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 22:03:04,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:04,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336197595] [2020-04-17 22:03:04,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:05,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336197595] [2020-04-17 22:03:05,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:05,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:03:05,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189372952] [2020-04-17 22:03:05,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:03:05,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:05,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:03:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:03:05,218 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:03:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:05,254 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:03:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:03:05,256 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:03:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:05,275 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:03:05,275 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:03:05,276 INFO L678 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 [2020-04-17 22:03:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:03:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:03:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:03:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:03:05,357 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:03:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:05,358 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:03:05,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:03:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:03:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:03:05,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:05,360 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:05,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 22:03:05,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:05,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104611913] [2020-04-17 22:03:05,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:05,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104611913] [2020-04-17 22:03:05,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:05,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:05,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518683666] [2020-04-17 22:03:05,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:05,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:05,602 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-17 22:03:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:05,696 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 22:03:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:03:05,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-17 22:03:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:05,700 INFO L225 Difference]: With dead ends: 330 [2020-04-17 22:03:05,700 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 22:03:05,701 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:03:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 22:03:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 22:03:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 22:03:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 22:03:05,727 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 22:03:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:05,728 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 22:03:05,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 22:03:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:03:05,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:05,730 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:05,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:05,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-04-17 22:03:05,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:05,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228522209] [2020-04-17 22:03:05,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:05,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228522209] [2020-04-17 22:03:05,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:05,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:05,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434021740] [2020-04-17 22:03:05,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:03:05,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:03:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:03:05,862 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 22:03:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:05,970 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-04-17 22:03:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:03:05,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 22:03:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:05,974 INFO L225 Difference]: With dead ends: 344 [2020-04-17 22:03:05,974 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 22:03:05,974 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:03:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 22:03:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 22:03:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 22:03:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-04-17 22:03:05,988 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-04-17 22:03:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:05,989 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-04-17 22:03:05,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:03:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-04-17 22:03:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:03:05,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:05,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:05,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:05,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:05,991 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-17 22:03:05,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:05,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437046089] [2020-04-17 22:03:05,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437046089] [2020-04-17 22:03:06,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:06,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298616846] [2020-04-17 22:03:06,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:03:06,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:03:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:03:06,065 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 6 states. [2020-04-17 22:03:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,189 INFO L93 Difference]: Finished difference Result 221 states and 529 transitions. [2020-04-17 22:03:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 22:03:06,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-17 22:03:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,191 INFO L225 Difference]: With dead ends: 221 [2020-04-17 22:03:06,191 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 22:03:06,191 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:03:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 22:03:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 22:03:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 22:03:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 234 transitions. [2020-04-17 22:03:06,198 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 234 transitions. Word has length 12 [2020-04-17 22:03:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,198 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 234 transitions. [2020-04-17 22:03:06,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:03:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 234 transitions. [2020-04-17 22:03:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:03:06,200 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:06,200 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:06,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 165801177, now seen corresponding path program 1 times [2020-04-17 22:03:06,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:06,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315108369] [2020-04-17 22:03:06,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315108369] [2020-04-17 22:03:06,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:06,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047407172] [2020-04-17 22:03:06,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:06,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:06,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:06,289 INFO L87 Difference]: Start difference. First operand 104 states and 234 transitions. Second operand 5 states. [2020-04-17 22:03:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,339 INFO L93 Difference]: Finished difference Result 119 states and 259 transitions. [2020-04-17 22:03:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:03:06,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:03:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,341 INFO L225 Difference]: With dead ends: 119 [2020-04-17 22:03:06,341 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 22:03:06,342 INFO L678 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 [2020-04-17 22:03:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 22:03:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 22:03:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 22:03:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-17 22:03:06,354 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 14 [2020-04-17 22:03:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,354 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-17 22:03:06,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-17 22:03:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:03:06,355 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:06,355 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:06,356 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:06,356 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-17 22:03:06,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:06,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354248367] [2020-04-17 22:03:06,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354248367] [2020-04-17 22:03:06,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:03:06,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508365279] [2020-04-17 22:03:06,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:03:06,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:03:06,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:03:06,456 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-04-17 22:03:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,491 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-04-17 22:03:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:03:06,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:03:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,492 INFO L225 Difference]: With dead ends: 91 [2020-04-17 22:03:06,492 INFO L226 Difference]: Without dead ends: 69 [2020-04-17 22:03:06,493 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 [2020-04-17 22:03:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-17 22:03:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-17 22:03:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-17 22:03:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-04-17 22:03:06,496 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-04-17 22:03:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,497 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-04-17 22:03:06,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:03:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-04-17 22:03:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:03:06,498 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:06,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:06,498 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-04-17 22:03:06,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:06,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049859707] [2020-04-17 22:03:06,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049859707] [2020-04-17 22:03:06,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:06,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885701463] [2020-04-17 22:03:06,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:06,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:06,562 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-04-17 22:03:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,597 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-04-17 22:03:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:03:06,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:03:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,599 INFO L225 Difference]: With dead ends: 65 [2020-04-17 22:03:06,599 INFO L226 Difference]: Without dead ends: 50 [2020-04-17 22:03:06,600 INFO L678 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 [2020-04-17 22:03:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-04-17 22:03:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-04-17 22:03:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-04-17 22:03:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-04-17 22:03:06,602 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-04-17 22:03:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,603 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-04-17 22:03:06,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-04-17 22:03:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:03:06,604 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:06,604 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:06,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-04-17 22:03:06,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:06,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662955525] [2020-04-17 22:03:06,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662955525] [2020-04-17 22:03:06,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:03:06,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604209192] [2020-04-17 22:03:06,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:03:06,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:03:06,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:03:06,671 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-04-17 22:03:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,729 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-04-17 22:03:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:03:06,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 22:03:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,730 INFO L225 Difference]: With dead ends: 43 [2020-04-17 22:03:06,730 INFO L226 Difference]: Without dead ends: 37 [2020-04-17 22:03:06,731 INFO L678 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 [2020-04-17 22:03:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-04-17 22:03:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-04-17 22:03:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-04-17 22:03:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-04-17 22:03:06,733 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-04-17 22:03:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,733 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-04-17 22:03:06,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:03:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-04-17 22:03:06,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:03:06,734 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:03:06,734 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:03:06,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:03:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:03:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-04-17 22:03:06,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:03:06,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198591511] [2020-04-17 22:03:06,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:03:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:03:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:03:06,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198591511] [2020-04-17 22:03:06,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:03:06,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:03:06,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069212289] [2020-04-17 22:03:06,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:03:06,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:03:06,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:03:06,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:03:06,805 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-04-17 22:03:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:03:06,835 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-04-17 22:03:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:03:06,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:03:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:03:06,836 INFO L225 Difference]: With dead ends: 36 [2020-04-17 22:03:06,836 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:03:06,837 INFO L678 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 [2020-04-17 22:03:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:03:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:03:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:03:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:03:06,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:03:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:03:06,838 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:03:06,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:03:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:03:06,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:03:06,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:03:06 BasicIcfg [2020-04-17 22:03:06,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:03:06,845 INFO L168 Benchmark]: Toolchain (without parser) took 5282.84 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 102.3 MB in the beginning and 122.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,846 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.97 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 160.2 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.71 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,853 INFO L168 Benchmark]: Boogie Preprocessor took 30.84 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,854 INFO L168 Benchmark]: RCFGBuilder took 465.78 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,855 INFO L168 Benchmark]: TraceAbstraction took 3928.75 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 133.9 MB in the beginning and 122.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:03:06,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.97 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 160.2 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.71 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.84 ms. Allocated memory is still 203.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.78 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3928.75 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 133.9 MB in the beginning and 122.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 170 SDtfs, 234 SDslu, 326 SDs, 0 SdLazy, 206 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4949 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...