/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:44:34,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:44:34,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:44:34,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:44:34,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:44:34,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:44:34,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:44:34,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:44:34,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:44:34,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:44:34,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:44:34,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:44:34,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:44:34,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:44:34,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:44:34,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:44:34,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:44:34,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:44:34,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:44:34,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:44:34,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:44:34,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:44:34,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:44:34,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:44:34,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:44:34,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:44:34,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:44:34,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:44:34,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:44:34,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:44:34,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:44:34,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:44:34,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:44:34,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:44:34,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:44:34,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:44:34,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:44:34,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:44:34,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:44:34,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:44:34,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:44:34,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:44:34,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:44:34,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:44:34,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:44:34,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:44:34,233 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:44:34,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:44:34,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:44:34,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:44:34,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:44:34,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:44:34,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:44:34,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:44:34,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:44:34,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:44:34,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:44:34,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:44:34,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:44:34,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:44:34,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:44:34,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:44:34,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:44:34,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:44:34,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:44:34,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:44:34,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:44:34,239 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:44:34,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:44:34,239 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:44:34,239 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:44:34,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:44:34,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:44:34,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:44:34,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:44:34,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:44:34,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:44:34,540 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:44:34,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-04-18 15:44:34,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a304afa/c9ff10e5ce4448d6ad33f47d04570dc9/FLAG3e676c1f4 [2020-04-18 15:44:35,135 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:44:35,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-04-18 15:44:35,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a304afa/c9ff10e5ce4448d6ad33f47d04570dc9/FLAG3e676c1f4 [2020-04-18 15:44:35,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42a304afa/c9ff10e5ce4448d6ad33f47d04570dc9 [2020-04-18 15:44:35,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:44:35,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:44:35,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:35,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:44:35,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:44:35,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:35" (1/1) ... [2020-04-18 15:44:35,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff0bbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:35, skipping insertion in model container [2020-04-18 15:44:35,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:44:35" (1/1) ... [2020-04-18 15:44:35,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:44:35,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:44:36,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:36,104 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:44:36,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:44:36,266 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:44:36,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36 WrapperNode [2020-04-18 15:44:36,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:44:36,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:36,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:44:36,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:44:36,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:44:36,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:44:36,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:44:36,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:44:36,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... [2020-04-18 15:44:36,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:44:36,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:44:36,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:44:36,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:44:36,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:44:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:44:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:44:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:44:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:44:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:44:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:44:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:44:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:44:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:44:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:44:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:44:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:44:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:44:36,433 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:44:36,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:44:36,838 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:44:36,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:36 BoogieIcfgContainer [2020-04-18 15:44:36,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:44:36,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:44:36,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:44:36,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:44:36,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:44:35" (1/3) ... [2020-04-18 15:44:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287be30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:36, skipping insertion in model container [2020-04-18 15:44:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:44:36" (2/3) ... [2020-04-18 15:44:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287be30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:44:36, skipping insertion in model container [2020-04-18 15:44:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:44:36" (3/3) ... [2020-04-18 15:44:36,850 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-04-18 15:44:36,858 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:44:36,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:44:36,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:44:36,868 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:44:36,903 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,905 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,905 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,906 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,906 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,906 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,907 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,907 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,907 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,908 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,909 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,909 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,909 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,910 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,910 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,910 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,911 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,911 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,917 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,917 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,917 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,918 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,925 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,926 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,926 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,926 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,936 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,937 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,937 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,937 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:44:36,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:44:36,968 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:44:36,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:44:36,969 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:44:36,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:44:36,969 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:44:36,969 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:44:36,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:44:36,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:44:36,989 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:36,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:37,048 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:37,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:37,054 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:37,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:44:37,084 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:44:37,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:44:37,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:44:37,087 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:44:37,089 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:44:38,505 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:44:38,690 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-18 15:44:38,804 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-18 15:44:38,804 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:44:38,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:44:38,834 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:44:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:44:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:38,846 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:38,847 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:38,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-18 15:44:38,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:38,862 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [974233596] [2020-04-18 15:44:38,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:38,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:44:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:44:38,897 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:38,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 2 times [2020-04-18 15:44:38,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:38,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291699276] [2020-04-18 15:44:38,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291699276] [2020-04-18 15:44:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:44:39,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,109 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,112 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:44:39,112 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,121 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:39,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:39,127 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:44:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,132 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:44:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:44:39,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:39,133 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [974233596] [2020-04-18 15:44:39,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:39,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:44:39,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [974233596] [2020-04-18 15:44:39,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:44:39,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:39,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:39,141 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:44:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,169 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 15:44:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:44:39,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:44:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:39,186 INFO L225 Difference]: With dead ends: 266 [2020-04-18 15:44:39,186 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:44:39,188 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:44:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:44:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:44:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 15:44:39,255 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 15:44:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 15:44:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:44:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 15:44:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:39,258 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:39,258 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:39,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-18 15:44:39,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:39,260 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1516352290] [2020-04-18 15:44:39,260 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,261 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:44:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 15:44:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:39,262 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 2 times [2020-04-18 15:44:39,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:39,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734308737] [2020-04-18 15:44:39,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734308737] [2020-04-18 15:44:39,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:39,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,377 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 15:44:39,379 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,388 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:39,389 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 15:44:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,397 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-04-18 15:44:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-04-18 15:44:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:44:39,398 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash -53993097, now seen corresponding path program 3 times [2020-04-18 15:44:39,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:39,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72548225] [2020-04-18 15:44:39,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72548225] [2020-04-18 15:44:39,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:39,451 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,452 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:44:39,453 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,458 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:39,459 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-04-18 15:44:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,463 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-04-18 15:44:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-04-18 15:44:39,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:39,463 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1516352290] [2020-04-18 15:44:39,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:39,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:39,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1516352290] [2020-04-18 15:44:39,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:44:39,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:39,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:39,466 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 15:44:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,499 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-18 15:44:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:44:39,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:44:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:39,502 INFO L225 Difference]: With dead ends: 266 [2020-04-18 15:44:39,502 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 15:44:39,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:44:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 15:44:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 15:44:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 15:44:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-18 15:44:39,518 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-18 15:44:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-18 15:44:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:44:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-18 15:44:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:39,520 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:39,520 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:39,520 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-18 15:44:39,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:39,521 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1508248047] [2020-04-18 15:44:39,522 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:44:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:44:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:39,524 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:39,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1335752706, now seen corresponding path program 2 times [2020-04-18 15:44:39,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:39,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509118412] [2020-04-18 15:44:39,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509118412] [2020-04-18 15:44:39,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:39,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:44:39,602 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,612 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:39,613 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:44:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,627 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2020-04-18 15:44:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-04-18 15:44:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:39,629 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1336319106, now seen corresponding path program 3 times [2020-04-18 15:44:39,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:39,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953197514] [2020-04-18 15:44:39,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953197514] [2020-04-18 15:44:39,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:39,668 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,669 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 15:44:39,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,676 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:39,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:39,677 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand 3 states. [2020-04-18 15:44:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,680 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:44:39,680 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 4 times [2020-04-18 15:44:39,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330686689] [2020-04-18 15:44:39,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:39,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330686689] [2020-04-18 15:44:39,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:39,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:39,745 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:39,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:39,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:44:39,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:39,766 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:39,767 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 4 states. [2020-04-18 15:44:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:39,776 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-04-18 15:44:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2020-04-18 15:44:39,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:39,777 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1508248047] [2020-04-18 15:44:39,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:39,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:44:39,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1508248047] [2020-04-18 15:44:39,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:44:39,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:39,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:39,779 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 6 states. [2020-04-18 15:44:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,019 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-18 15:44:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:40,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:44:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:40,021 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:44:40,021 INFO L226 Difference]: Without dead ends: 113 [2020-04-18 15:44:40,021 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:44:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-18 15:44:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-18 15:44:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-18 15:44:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-18 15:44:40,031 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-18 15:44:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:40,032 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-18 15:44:40,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:44:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-18 15:44:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:40,033 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:40,033 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:40,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-18 15:44:40,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:40,034 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [102402060] [2020-04-18 15:44:40,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,036 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 15:44:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:44:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:40,037 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1541327102, now seen corresponding path program 2 times [2020-04-18 15:44:40,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336948255] [2020-04-18 15:44:40,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336948255] [2020-04-18 15:44:40,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:40,070 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 15:44:40,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,078 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:40,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:40,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:40,079 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-04-18 15:44:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,086 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2020-04-18 15:44:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-04-18 15:44:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:40,087 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1523780462, now seen corresponding path program 3 times [2020-04-18 15:44:40,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650649653] [2020-04-18 15:44:40,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650649653] [2020-04-18 15:44:40,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:40,116 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,117 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,119 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:40,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,124 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:40,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:40,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:40,125 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-04-18 15:44:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,129 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:44:40,130 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,131 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 4 times [2020-04-18 15:44:40,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520571340] [2020-04-18 15:44:40,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520571340] [2020-04-18 15:44:40,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:40,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,186 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:44:40,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,216 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:44:40,217 INFO L87 Difference]: Start difference. First operand 55 states and 84 transitions. Second operand 5 states. [2020-04-18 15:44:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,248 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2020-04-18 15:44:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2020-04-18 15:44:40,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:40,249 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [102402060] [2020-04-18 15:44:40,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:40,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:40,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [102402060] [2020-04-18 15:44:40,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:44:40,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:40,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:44:40,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:44:40,251 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 7 states. [2020-04-18 15:44:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,488 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-18 15:44:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:44:40,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:44:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:40,490 INFO L225 Difference]: With dead ends: 111 [2020-04-18 15:44:40,490 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 15:44:40,491 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:44:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 15:44:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 15:44:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 15:44:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-18 15:44:40,498 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-18 15:44:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:40,498 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-18 15:44:40,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:44:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-18 15:44:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:40,499 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:40,499 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:40,499 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-18 15:44:40,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:40,500 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1567003721] [2020-04-18 15:44:40,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 134 transitions. [2020-04-18 15:44:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:44:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:40,504 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash -605969466, now seen corresponding path program 2 times [2020-04-18 15:44:40,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692809995] [2020-04-18 15:44:40,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692809995] [2020-04-18 15:44:40,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:40,535 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,542 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 15:44:40,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,550 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:44:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:40,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:40,551 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 15:44:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,565 INFO L93 Difference]: Finished difference Result 105 states and 205 transitions. [2020-04-18 15:44:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 205 transitions. [2020-04-18 15:44:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:40,566 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash -588422826, now seen corresponding path program 3 times [2020-04-18 15:44:40,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949944060] [2020-04-18 15:44:40,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949944060] [2020-04-18 15:44:40,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:40,628 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,631 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,634 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 15:44:40,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,645 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:40,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:40,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:40,646 INFO L87 Difference]: Start difference. First operand 105 states and 205 transitions. Second operand 3 states. [2020-04-18 15:44:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,650 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:44:40,651 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:40,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 4 times [2020-04-18 15:44:40,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:40,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344506658] [2020-04-18 15:44:40,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:40,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344506658] [2020-04-18 15:44:40,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:40,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:44:40,756 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:40,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:40,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 15:44:40,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:40,802 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:44:40,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:40,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:44:40,803 INFO L87 Difference]: Start difference. First operand 119 states and 222 transitions. Second operand 6 states. [2020-04-18 15:44:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:40,870 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-04-18 15:44:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 222 transitions. [2020-04-18 15:44:40,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:40,871 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1567003721] [2020-04-18 15:44:40,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:40,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:44:40,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1567003721] [2020-04-18 15:44:40,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:44:40,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:40,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:44:40,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:44:40,873 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 8 states. [2020-04-18 15:44:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,081 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-18 15:44:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:44:41,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:44:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:41,083 INFO L225 Difference]: With dead ends: 75 [2020-04-18 15:44:41,083 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 15:44:41,083 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 15:44:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 15:44:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-18 15:44:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-18 15:44:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-18 15:44:41,088 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-18 15:44:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:41,088 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-18 15:44:41,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:44:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-18 15:44:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,089 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:44:41,089 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:44:41,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:44:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-18 15:44:41,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:44:41,090 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1919358110] [2020-04-18 15:44:41,091 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:44:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:44:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,099 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:44:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash -689704600, now seen corresponding path program 2 times [2020-04-18 15:44:41,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381067197] [2020-04-18 15:44:41,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381067197] [2020-04-18 15:44:41,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:41,127 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 90 transitions. [2020-04-18 15:44:41,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,141 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:41,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:41,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:44:41,142 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:44:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,152 INFO L93 Difference]: Finished difference Result 390 states and 1057 transitions. [2020-04-18 15:44:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1057 transitions. [2020-04-18 15:44:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,154 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:44:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,154 INFO L82 PathProgramCache]: Analyzing trace with hash 595608656, now seen corresponding path program 3 times [2020-04-18 15:44:41,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785134230] [2020-04-18 15:44:41,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785134230] [2020-04-18 15:44:41,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:44:41,182 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,189 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 76 transitions. [2020-04-18 15:44:41,189 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:41,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:44:41,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:44:41,195 INFO L87 Difference]: Start difference. First operand 390 states and 1057 transitions. Second operand 3 states. [2020-04-18 15:44:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,201 INFO L93 Difference]: Finished difference Result 446 states and 1167 transitions. [2020-04-18 15:44:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1167 transitions. [2020-04-18 15:44:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,203 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:44:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash -901910694, now seen corresponding path program 4 times [2020-04-18 15:44:41,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744579381] [2020-04-18 15:44:41,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744579381] [2020-04-18 15:44:41,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:41,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,237 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,242 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 15:44:41,242 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,267 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:44:41,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:41,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:44:41,268 INFO L87 Difference]: Start difference. First operand 446 states and 1167 transitions. Second operand 4 states. [2020-04-18 15:44:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,291 INFO L93 Difference]: Finished difference Result 638 states and 1577 transitions. [2020-04-18 15:44:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1577 transitions. [2020-04-18 15:44:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,295 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:44:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash -901846014, now seen corresponding path program 5 times [2020-04-18 15:44:41,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418308631] [2020-04-18 15:44:41,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418308631] [2020-04-18 15:44:41,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:44:41,379 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,380 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,387 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-04-18 15:44:41,387 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,425 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:44:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:44:41,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:44:41,427 INFO L87 Difference]: Start difference. First operand 638 states and 1577 transitions. Second operand 6 states. [2020-04-18 15:44:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,537 INFO L93 Difference]: Finished difference Result 644 states and 1580 transitions. [2020-04-18 15:44:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1580 transitions. [2020-04-18 15:44:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,540 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:44:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 6 times [2020-04-18 15:44:41,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632129156] [2020-04-18 15:44:41,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632129156] [2020-04-18 15:44:41,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:41,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,579 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 15:44:41,585 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:44:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:44:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:44:41,600 INFO L87 Difference]: Start difference. First operand 644 states and 1580 transitions. Second operand 4 states. [2020-04-18 15:44:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,628 INFO L93 Difference]: Finished difference Result 803 states and 1956 transitions. [2020-04-18 15:44:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1956 transitions. [2020-04-18 15:44:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:44:41,631 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:44:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:44:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 7 times [2020-04-18 15:44:41,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:44:41,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574546128] [2020-04-18 15:44:41,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:44:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:44:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:44:41,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574546128] [2020-04-18 15:44:41,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:44:41,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:44:41,689 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:44:41,690 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:44:41,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-04-18 15:44:41,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:44:41,798 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:44:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:44:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:44:41,799 INFO L87 Difference]: Start difference. First operand 803 states and 1956 transitions. Second operand 5 states. [2020-04-18 15:44:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:41,836 INFO L93 Difference]: Finished difference Result 1276 states and 2891 transitions. [2020-04-18 15:44:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2891 transitions. [2020-04-18 15:44:41,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:41,841 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1919358110] [2020-04-18 15:44:41,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:44:41,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:44:41,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1919358110] [2020-04-18 15:44:41,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:44:41,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:44:41,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:44:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:44:41,843 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 14 states. [2020-04-18 15:44:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:44:43,232 INFO L93 Difference]: Finished difference Result 128 states and 245 transitions. [2020-04-18 15:44:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-04-18 15:44:43,233 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 15:44:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:44:43,233 INFO L225 Difference]: With dead ends: 128 [2020-04-18 15:44:43,233 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:44:43,236 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=5016, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 15:44:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:44:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:44:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:44:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:44:43,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:44:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:44:43,237 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:44:43,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:44:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:44:43,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:44:43,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:44:43 BasicIcfg [2020-04-18 15:44:43,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:44:43,251 INFO L168 Benchmark]: Toolchain (without parser) took 7803.35 ms. Allocated memory was 138.4 MB in the beginning and 312.0 MB in the end (delta: 173.5 MB). Free memory was 100.5 MB in the beginning and 264.6 MB in the end (delta: -164.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,253 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.30 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 98.6 MB in the beginning and 159.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.05 ms. Allocated memory is still 203.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,259 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,260 INFO L168 Benchmark]: RCFGBuilder took 480.63 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 133.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:44:43,260 INFO L168 Benchmark]: TraceAbstraction took 6402.55 ms. Allocated memory was 203.9 MB in the beginning and 312.0 MB in the end (delta: 108.0 MB). Free memory was 133.6 MB in the beginning and 264.6 MB in the end (delta: -131.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:44:43,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 805.30 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 98.6 MB in the beginning and 159.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.05 ms. Allocated memory is still 203.9 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.63 ms. Allocated memory is still 203.9 MB. Free memory was 156.1 MB in the beginning and 133.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6402.55 ms. Allocated memory was 203.9 MB in the beginning and 312.0 MB in the end (delta: 108.0 MB). Free memory was 133.6 MB in the beginning and 264.6 MB in the end (delta: -131.0 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, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 119 SDtfs, 239 SDslu, 302 SDs, 0 SdLazy, 589 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 1.6s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...