/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/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:06:07,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:06:07,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:06:07,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:06:07,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:06:07,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:06:07,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:06:07,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:06:07,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:06:07,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:06:07,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:06:07,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:06:07,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:06:07,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:06:07,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:06:07,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:06:07,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:06:07,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:06:07,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:06:07,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:06:07,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:06:07,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:06:07,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:06:07,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:06:07,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:06:07,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:06:07,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:06:07,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:06:07,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:06:07,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:06:07,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:06:07,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:06:07,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:06:07,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:06:07,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:06:07,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:06:07,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:06:07,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:06:07,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:06:07,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:06:07,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:06:07,310 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 22:06:07,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:06:07,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:06:07,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:06:07,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:06:07,326 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:06:07,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:06:07,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:06:07,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:06:07,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:06:07,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:06:07,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:06:07,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:06:07,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:06:07,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:06:07,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:06:07,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:06:07,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:06:07,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:06:07,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:06:07,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:06:07,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:06:07,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:06:07,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:06:07,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:06:07,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:06:07,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:06:07,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:06:07,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:06:07,620 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:06:07,620 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-17 22:06:07,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa038bb0/8277e18b779f41d1b7361e977e77e5eb/FLAG99c24dbba [2020-04-17 22:06:08,216 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:06:08,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-17 22:06:08,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa038bb0/8277e18b779f41d1b7361e977e77e5eb/FLAG99c24dbba [2020-04-17 22:06:08,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa038bb0/8277e18b779f41d1b7361e977e77e5eb [2020-04-17 22:06:08,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:06:08,515 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:06:08,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:06:08,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:06:08,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:06:08,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:06:08" (1/1) ... [2020-04-17 22:06:08,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:08, skipping insertion in model container [2020-04-17 22:06:08,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:06:08" (1/1) ... [2020-04-17 22:06:08,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:06:08,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:06:09,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:06:09,025 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:06:09,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:06:09,163 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:06:09,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09 WrapperNode [2020-04-17 22:06:09,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:06:09,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:06:09,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:06:09,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:06:09,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:06:09,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:06:09,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:06:09,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:06:09,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... [2020-04-17 22:06:09,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:06:09,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:06:09,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:06:09,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:06:09,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:06:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:06:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:06:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:06:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:06:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:06:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:06:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:06:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:06:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:06:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:06:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:06:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:06:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:06:09,301 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 22:06:09,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:06:09,633 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:06:09,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:06:09 BoogieIcfgContainer [2020-04-17 22:06:09,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:06:09,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:06:09,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:06:09,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:06:09,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:06:08" (1/3) ... [2020-04-17 22:06:09,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17525f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:06:09, skipping insertion in model container [2020-04-17 22:06:09,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:06:09" (2/3) ... [2020-04-17 22:06:09,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17525f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:06:09, skipping insertion in model container [2020-04-17 22:06:09,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:06:09" (3/3) ... [2020-04-17 22:06:09,645 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-04-17 22:06:09,655 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:06:09,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:06:09,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:06:09,664 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:06:09,695 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,695 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,696 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,696 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,697 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,698 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,698 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,698 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,699 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,699 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,699 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,699 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,700 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,701 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,701 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,701 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,702 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,702 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,709 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,710 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,710 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,710 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,717 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,718 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,718 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,718 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,721 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,722 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:06:09,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:06:09,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:06:09,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:06:09,759 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:06:09,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:06:09,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:06:09,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:06:09,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:06:09,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:06:09,779 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:09,781 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:09,833 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:06:09,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:06:09,841 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 22:06:09,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:06:09,869 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:06:09,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:06:09,872 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 22:06:09,875 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:06:09,876 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:06:11,639 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-17 22:06:11,640 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:06:11,644 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:06:11,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:06:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:06:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:06:11,687 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:11,688 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:11,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-17 22:06:11,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:11,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456082748] [2020-04-17 22:06:11,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,010 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 22:06:12,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456082748] [2020-04-17 22:06:12,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:06:12,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064969193] [2020-04-17 22:06:12,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:12,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:12,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:12,036 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:06:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,073 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:06:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:12,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:06:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,091 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:06:12,092 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:06:12,093 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 22:06:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:06:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:06:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:06:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:06:12,155 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:06:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,157 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:06:12,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:06:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:06:12,158 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,158 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-17 22:06:12,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802058788] [2020-04-17 22:06:12,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,233 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 22:06:12,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802058788] [2020-04-17 22:06:12,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:12,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069313493] [2020-04-17 22:06:12,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:12,238 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 22:06:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,279 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-17 22:06:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:06:12,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:06:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,288 INFO L225 Difference]: With dead ends: 278 [2020-04-17 22:06:12,288 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 22:06:12,289 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 22:06:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 22:06:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 22:06:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 22:06:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-17 22:06:12,319 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-17 22:06:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,319 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-17 22:06:12,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-17 22:06:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:06:12,322 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,322 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,323 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,324 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-17 22:06:12,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809096203] [2020-04-17 22:06:12,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,415 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 22:06:12,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809096203] [2020-04-17 22:06:12,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:12,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212782418] [2020-04-17 22:06:12,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:12,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:12,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:12,419 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-17 22:06:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,454 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-17 22:06:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:06:12,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:06:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,460 INFO L225 Difference]: With dead ends: 218 [2020-04-17 22:06:12,460 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:06:12,461 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 22:06:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:06:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:06:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:06:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 22:06:12,471 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-17 22:06:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,472 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 22:06:12,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 22:06:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:06:12,473 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-17 22:06:12,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899232100] [2020-04-17 22:06:12,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,519 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 22:06:12,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899232100] [2020-04-17 22:06:12,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:06:12,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978535277] [2020-04-17 22:06:12,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:12,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:12,521 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 22:06:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,528 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-17 22:06:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:12,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 22:06:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,530 INFO L225 Difference]: With dead ends: 144 [2020-04-17 22:06:12,530 INFO L226 Difference]: Without dead ends: 144 [2020-04-17 22:06:12,531 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 22:06:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-17 22:06:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-17 22:06:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-17 22:06:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-17 22:06:12,541 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-17 22:06:12,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,541 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-17 22:06:12,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-17 22:06:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:06:12,546 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,547 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,547 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-17 22:06:12,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900915417] [2020-04-17 22:06:12,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,630 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 22:06:12,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900915417] [2020-04-17 22:06:12,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:12,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777734615] [2020-04-17 22:06:12,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:12,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:12,633 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-17 22:06:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,699 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-17 22:06:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:06:12,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:06:12,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,703 INFO L225 Difference]: With dead ends: 164 [2020-04-17 22:06:12,703 INFO L226 Difference]: Without dead ends: 124 [2020-04-17 22:06:12,703 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 22:06:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-17 22:06:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-17 22:06:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-17 22:06:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-17 22:06:12,718 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-17 22:06:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,719 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-17 22:06:12,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-17 22:06:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:06:12,725 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,725 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-17 22:06:12,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444093490] [2020-04-17 22:06:12,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,820 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 22:06:12,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444093490] [2020-04-17 22:06:12,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:12,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108381272] [2020-04-17 22:06:12,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:06:12,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:06:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:06:12,823 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-17 22:06:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,871 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-17 22:06:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:06:12,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:06:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,873 INFO L225 Difference]: With dead ends: 122 [2020-04-17 22:06:12,873 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 22:06:12,874 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 22:06:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 22:06:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 22:06:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 22:06:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-17 22:06:12,879 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-17 22:06:12,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,880 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-17 22:06:12,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:06:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-17 22:06:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:06:12,881 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,881 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,881 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-17 22:06:12,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225136840] [2020-04-17 22:06:12,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,910 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 22:06:12,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225136840] [2020-04-17 22:06:12,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:06:12,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001632085] [2020-04-17 22:06:12,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:06:12,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:06:12,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:06:12,912 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-17 22:06:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:12,920 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-17 22:06:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:06:12,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:06:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:12,922 INFO L225 Difference]: With dead ends: 115 [2020-04-17 22:06:12,922 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 22:06:12,922 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 22:06:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 22:06:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-17 22:06:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-17 22:06:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-17 22:06:12,927 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-17 22:06:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:12,927 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-17 22:06:12,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:06:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-17 22:06:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:06:12,928 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:12,928 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:12,929 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:12,929 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-17 22:06:12,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:12,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361590025] [2020-04-17 22:06:12,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:12,972 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 22:06:12,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361590025] [2020-04-17 22:06:12,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:12,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:06:12,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811729048] [2020-04-17 22:06:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:06:12,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:06:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:06:12,974 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-17 22:06:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:13,022 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-17 22:06:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:06:13,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:06:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:13,024 INFO L225 Difference]: With dead ends: 114 [2020-04-17 22:06:13,024 INFO L226 Difference]: Without dead ends: 76 [2020-04-17 22:06:13,025 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 22:06:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-17 22:06:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-17 22:06:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-17 22:06:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-17 22:06:13,029 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-17 22:06:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:13,029 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-17 22:06:13,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:06:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-17 22:06:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:06:13,030 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:06:13,031 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:06:13,031 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:06:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:06:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-17 22:06:13,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:06:13,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658952613] [2020-04-17 22:06:13,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:06:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:06:13,091 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 22:06:13,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658952613] [2020-04-17 22:06:13,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:06:13,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:06:13,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631896939] [2020-04-17 22:06:13,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:06:13,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:06:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:06:13,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:06:13,094 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-17 22:06:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:06:13,120 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-17 22:06:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:06:13,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:06:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:06:13,121 INFO L225 Difference]: With dead ends: 70 [2020-04-17 22:06:13,121 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:06:13,121 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 22:06:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:06:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:06:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:06:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:06:13,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-17 22:06:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:06:13,123 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:06:13,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:06:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:06:13,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:06:13,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:06:13 BasicIcfg [2020-04-17 22:06:13,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:06:13,130 INFO L168 Benchmark]: Toolchain (without parser) took 4634.33 ms. Allocated memory was 140.5 MB in the beginning and 249.0 MB in the end (delta: 108.5 MB). Free memory was 101.5 MB in the beginning and 158.4 MB in the end (delta: -56.8 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,130 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.16 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 99.8 MB in the beginning and 157.0 MB in the end (delta: -57.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,133 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,134 INFO L168 Benchmark]: RCFGBuilder took 398.67 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 131.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,135 INFO L168 Benchmark]: TraceAbstraction took 3488.42 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 131.1 MB in the beginning and 158.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:06:13,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.16 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 99.8 MB in the beginning and 157.0 MB in the end (delta: -57.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.77 ms. Allocated memory is still 202.4 MB. Free memory was 154.9 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.67 ms. Allocated memory is still 202.4 MB. Free memory was 153.6 MB in the beginning and 131.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3488.42 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 131.1 MB in the beginning and 158.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 19.4 MB. 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, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 676 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3332 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...