/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:15:21,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:15:21,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:15:21,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:15:21,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:15:21,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:15:21,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:15:21,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:15:21,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:15:21,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:15:21,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:15:21,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:15:21,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:15:21,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:15:21,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:15:21,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:15:21,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:15:21,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:15:21,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:15:21,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:15:21,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:15:21,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:15:21,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:15:21,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:15:21,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:15:21,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:15:21,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:15:21,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:15:21,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:15:21,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:15:21,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:15:21,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:15:21,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:15:21,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:15:21,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:15:21,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:15:21,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:15:21,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:15:21,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:15:21,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:15:21,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:15:21,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:15:21,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:15:21,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:15:21,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:15:21,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:15:21,342 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:15:21,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:15:21,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:15:21,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:15:21,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:15:21,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:15:21,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:15:21,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:15:21,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:15:21,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:15:21,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:15:21,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:15:21,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:15:21,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:15:21,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:15:21,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:15:21,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:15:21,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:15:21,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:15:21,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:15:21,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:15:21,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:15:21,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:15:21,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:15:21,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:15:21,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:15:21,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:15:21,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:15:21,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:15:21,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:15:21,672 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:15:21,673 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-04-17 18:15:21,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9306010b1/0be84425486a47ea8d18ed8d5857199a/FLAGb3fa17a5a [2020-04-17 18:15:22,280 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:15:22,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-04-17 18:15:22,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9306010b1/0be84425486a47ea8d18ed8d5857199a/FLAGb3fa17a5a [2020-04-17 18:15:22,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9306010b1/0be84425486a47ea8d18ed8d5857199a [2020-04-17 18:15:22,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:15:22,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:15:22,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:15:22,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:15:22,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:15:22,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:15:22" (1/1) ... [2020-04-17 18:15:22,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e929f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:22, skipping insertion in model container [2020-04-17 18:15:22,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:15:22" (1/1) ... [2020-04-17 18:15:22,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:15:22,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:15:23,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:15:23,179 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:15:23,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:15:23,310 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:15:23,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23 WrapperNode [2020-04-17 18:15:23,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:15:23,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:15:23,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:15:23,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:15:23,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:15:23,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:15:23,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:15:23,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:15:23,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (1/1) ... [2020-04-17 18:15:23,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:15:23,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:15:23,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:15:23,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:15:23,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (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 18:15:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:15:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:15:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:15:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:15:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:15:23,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:15:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:15:23,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:15:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:15:23,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:15:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:15:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:15:23,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:15:23,462 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 18:15:23,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:15:23,838 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:15:23,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:15:23 BoogieIcfgContainer [2020-04-17 18:15:23,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:15:23,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:15:23,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:15:23,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:15:23,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:15:22" (1/3) ... [2020-04-17 18:15:23,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b95c05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:15:23, skipping insertion in model container [2020-04-17 18:15:23,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:15:23" (2/3) ... [2020-04-17 18:15:23,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b95c05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:15:23, skipping insertion in model container [2020-04-17 18:15:23,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:15:23" (3/3) ... [2020-04-17 18:15:23,850 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-04-17 18:15:23,859 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:15:23,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:15:23,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:15:23,866 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:15:23,890 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,891 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,892 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,892 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,893 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,893 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,893 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,893 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,894 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,894 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,895 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,895 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,895 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,895 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,896 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,896 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,900 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,900 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,900 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,901 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,909 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,909 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,910 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,910 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,918 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,918 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,919 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:15:23,943 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:15:23,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:15:23,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:15:23,959 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:15:23,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:15:23,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:15:23,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:15:23,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:15:23,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:15:23,974 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 18:15:23,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 18:15:24,018 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 18:15:24,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:15:24,024 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. [2020-04-17 18:15:24,026 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 18:15:24,046 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 18:15:24,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:15:24,047 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. [2020-04-17 18:15:24,049 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 18:15:24,050 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:15:25,470 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 18:15:25,827 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-04-17 18:15:25,827 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 18:15:25,832 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 18:15:25,861 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 18:15:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 18:15:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:15:25,872 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:25,873 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:25,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:25,882 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-04-17 18:15:25,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:25,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596498726] [2020-04-17 18:15:25,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:26,176 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 18:15:26,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596498726] [2020-04-17 18:15:26,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:26,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:15:26,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412607402] [2020-04-17 18:15:26,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:15:26,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:26,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:15:26,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:15:26,201 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 18:15:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:26,271 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-17 18:15:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:15:26,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:15:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:26,290 INFO L225 Difference]: With dead ends: 290 [2020-04-17 18:15:26,290 INFO L226 Difference]: Without dead ends: 226 [2020-04-17 18:15:26,291 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 [2020-04-17 18:15:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-17 18:15:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-17 18:15:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-17 18:15:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-17 18:15:26,366 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-17 18:15:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:26,367 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-17 18:15:26,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:15:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-17 18:15:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:15:26,369 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:26,369 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:26,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash 824028903, now seen corresponding path program 1 times [2020-04-17 18:15:26,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:26,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616280413] [2020-04-17 18:15:26,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:15:26,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616280413] [2020-04-17 18:15:26,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:26,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:15:26,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246949082] [2020-04-17 18:15:26,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:15:26,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:26,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:15:26,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:15:26,426 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-17 18:15:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:26,444 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-04-17 18:15:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:15:26,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:15:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:26,448 INFO L225 Difference]: With dead ends: 220 [2020-04-17 18:15:26,448 INFO L226 Difference]: Without dead ends: 220 [2020-04-17 18:15:26,449 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 [2020-04-17 18:15:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-17 18:15:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-17 18:15:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-17 18:15:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-04-17 18:15:26,486 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-04-17 18:15:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:26,486 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-04-17 18:15:26,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:15:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-04-17 18:15:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:15:26,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:26,488 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:26,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-04-17 18:15:26,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:26,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584708687] [2020-04-17 18:15:26,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:26,611 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 18:15:26,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584708687] [2020-04-17 18:15:26,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:26,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:15:26,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702204718] [2020-04-17 18:15:26,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:15:26,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:26,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:15:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:15:26,614 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-04-17 18:15:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:26,675 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-04-17 18:15:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:15:26,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 18:15:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:26,678 INFO L225 Difference]: With dead ends: 240 [2020-04-17 18:15:26,680 INFO L226 Difference]: Without dead ends: 176 [2020-04-17 18:15:26,680 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 [2020-04-17 18:15:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-04-17 18:15:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-04-17 18:15:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-04-17 18:15:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-04-17 18:15:26,703 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-04-17 18:15:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:26,703 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-04-17 18:15:26,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:15:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-04-17 18:15:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:15:26,705 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:26,706 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:26,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:26,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-04-17 18:15:26,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:26,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459608743] [2020-04-17 18:15:26,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:26,775 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 18:15:26,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459608743] [2020-04-17 18:15:26,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:26,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:15:26,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402272698] [2020-04-17 18:15:26,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:15:26,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:26,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:15:26,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:15:26,778 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-04-17 18:15:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:26,787 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-04-17 18:15:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:15:26,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:15:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:26,793 INFO L225 Difference]: With dead ends: 225 [2020-04-17 18:15:26,793 INFO L226 Difference]: Without dead ends: 183 [2020-04-17 18:15:26,793 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 [2020-04-17 18:15:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-17 18:15:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-17 18:15:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-17 18:15:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-04-17 18:15:26,803 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-04-17 18:15:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:26,803 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-04-17 18:15:26,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:15:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-04-17 18:15:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:15:26,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:26,805 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:26,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-04-17 18:15:26,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:26,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780078553] [2020-04-17 18:15:26,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:26,887 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 18:15:26,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780078553] [2020-04-17 18:15:26,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:15:26,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959756062] [2020-04-17 18:15:26,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:15:26,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:26,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:15:26,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:15:26,890 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 5 states. [2020-04-17 18:15:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:26,944 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-04-17 18:15:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:15:26,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 18:15:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:26,946 INFO L225 Difference]: With dead ends: 162 [2020-04-17 18:15:26,946 INFO L226 Difference]: Without dead ends: 125 [2020-04-17 18:15:26,947 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 [2020-04-17 18:15:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-17 18:15:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-17 18:15:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-17 18:15:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-04-17 18:15:26,953 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-04-17 18:15:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:26,953 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-04-17 18:15:26,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:15:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-04-17 18:15:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:15:26,955 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:26,955 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:26,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:26,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:26,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-04-17 18:15:26,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:26,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340894836] [2020-04-17 18:15:26,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:27,014 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 18:15:27,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340894836] [2020-04-17 18:15:27,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:27,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:15:27,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674565510] [2020-04-17 18:15:27,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:15:27,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:15:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:15:27,018 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-04-17 18:15:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:27,041 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-04-17 18:15:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:15:27,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 18:15:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:27,044 INFO L225 Difference]: With dead ends: 157 [2020-04-17 18:15:27,044 INFO L226 Difference]: Without dead ends: 120 [2020-04-17 18:15:27,044 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 [2020-04-17 18:15:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-17 18:15:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-04-17 18:15:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-04-17 18:15:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-04-17 18:15:27,049 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-04-17 18:15:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:27,049 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-04-17 18:15:27,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:15:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-04-17 18:15:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:15:27,051 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:27,051 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:27,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:27,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-04-17 18:15:27,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:27,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394012448] [2020-04-17 18:15:27,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:27,139 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 18:15:27,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394012448] [2020-04-17 18:15:27,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:27,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:15:27,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834411579] [2020-04-17 18:15:27,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:15:27,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:15:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:15:27,143 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 6 states. [2020-04-17 18:15:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:27,203 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-04-17 18:15:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:15:27,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 18:15:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:27,204 INFO L225 Difference]: With dead ends: 112 [2020-04-17 18:15:27,204 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 18:15:27,205 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 [2020-04-17 18:15:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 18:15:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 18:15:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 18:15:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 18:15:27,207 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-04-17 18:15:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:27,207 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 18:15:27,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:15:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 18:15:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:15:27,208 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:15:27,208 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:15:27,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:15:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:15:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-04-17 18:15:27,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:15:27,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043232663] [2020-04-17 18:15:27,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:15:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:15:27,276 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 18:15:27,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043232663] [2020-04-17 18:15:27,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:15:27,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:15:27,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089213599] [2020-04-17 18:15:27,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:15:27,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:15:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:15:27,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:15:27,279 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 18:15:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:15:27,292 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 18:15:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:15:27,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:15:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:15:27,294 INFO L225 Difference]: With dead ends: 35 [2020-04-17 18:15:27,295 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:15:27,295 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 18:15:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:15:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:15:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:15:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:15:27,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 18:15:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:15:27,296 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:15:27,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:15:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:15:27,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:15:27,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:15:27 BasicIcfg [2020-04-17 18:15:27,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:15:27,309 INFO L168 Benchmark]: Toolchain (without parser) took 4734.77 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 100.6 MB in the beginning and 182.3 MB in the end (delta: -81.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,310 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.34 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 98.6 MB in the beginning and 157.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.70 ms. Allocated memory is still 200.8 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,316 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,317 INFO L168 Benchmark]: RCFGBuilder took 451.00 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 132.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:15:27,318 INFO L168 Benchmark]: TraceAbstraction took 3458.90 ms. Allocated memory was 200.8 MB in the beginning and 249.0 MB in the end (delta: 48.2 MB). Free memory was 131.6 MB in the beginning and 182.3 MB in the end (delta: -50.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:15:27,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.34 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 98.6 MB in the beginning and 157.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.70 ms. Allocated memory is still 200.8 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.51 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.00 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 132.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3458.90 ms. Allocated memory was 200.8 MB in the beginning and 249.0 MB in the end (delta: 48.2 MB). Free memory was 131.6 MB in the beginning and 182.3 MB in the end (delta: -50.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 157 SDtfs, 114 SDslu, 178 SDs, 0 SdLazy, 97 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...