/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:08:10,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:08:10,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:08:10,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:08:10,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:08:10,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:08:10,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:08:10,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:08:10,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:08:10,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:08:10,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:08:10,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:08:10,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:08:10,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:08:10,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:08:10,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:08:10,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:08:10,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:08:10,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:08:10,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:08:10,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:08:10,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:08:10,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:08:10,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:08:10,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:08:10,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:08:10,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:08:10,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:08:10,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:08:10,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:08:10,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:08:10,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:08:10,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:08:10,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:08:10,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:08:10,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:08:10,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:08:10,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:08:10,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:08:10,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:08:10,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:08:10,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:08:10,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:08:10,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:08:10,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:08:10,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:08:10,223 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:08:10,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:08:10,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:08:10,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:08:10,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:08:10,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:08:10,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:08:10,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:08:10,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:08:10,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:08:10,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:08:10,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:08:10,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:08:10,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:08:10,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:08:10,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:08:10,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:08:10,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:08:10,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:08:10,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:08:10,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:08:10,229 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:08:10,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:08:10,229 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:08:10,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:08:10,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:08:10,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:08:10,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:08:10,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:08:10,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:08:10,564 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:08:10,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 11:08:10,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23965272d/b4626bef07dc44cf9edf05570bf2c9cf/FLAGfff2f4589 [2020-04-18 11:08:11,146 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:08:11,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-18 11:08:11,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23965272d/b4626bef07dc44cf9edf05570bf2c9cf/FLAGfff2f4589 [2020-04-18 11:08:11,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23965272d/b4626bef07dc44cf9edf05570bf2c9cf [2020-04-18 11:08:11,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:08:11,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:08:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:08:11,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:08:11,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:08:11,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:08:11" (1/1) ... [2020-04-18 11:08:11,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297684a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:11, skipping insertion in model container [2020-04-18 11:08:11,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:08:11" (1/1) ... [2020-04-18 11:08:11,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:08:11,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:08:12,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:08:12,079 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:08:12,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:08:12,228 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:08:12,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12 WrapperNode [2020-04-18 11:08:12,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:08:12,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:08:12,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:08:12,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:08:12,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:08:12,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:08:12,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:08:12,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:08:12,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (1/1) ... [2020-04-18 11:08:12,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:08:12,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:08:12,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:08:12,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:08:12,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (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 11:08:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:08:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:08:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:08:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:08:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:08:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:08:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:08:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:08:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:08:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:08:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:08:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:08:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:08:12,373 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 11:08:12,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:08:12,780 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:08:12,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:08:12 BoogieIcfgContainer [2020-04-18 11:08:12,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:08:12,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:08:12,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:08:12,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:08:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:08:11" (1/3) ... [2020-04-18 11:08:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52716eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:08:12, skipping insertion in model container [2020-04-18 11:08:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:08:12" (2/3) ... [2020-04-18 11:08:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52716eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:08:12, skipping insertion in model container [2020-04-18 11:08:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:08:12" (3/3) ... [2020-04-18 11:08:12,793 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-04-18 11:08:12,802 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:08:12,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:08:12,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:08:12,810 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:08:12,835 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,835 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,835 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,836 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,836 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,836 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,837 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,837 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,837 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,838 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,838 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,838 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,839 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,840 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,840 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,841 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,845 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,845 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,846 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,846 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,852 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,852 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,853 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,858 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,858 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,858 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,859 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:08:12,882 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:08:12,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:08:12,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:08:12,905 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:08:12,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:08:12,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:08:12,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:08:12,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:08:12,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:08:12,926 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 11:08:12,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:08:12,967 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:08:12,967 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:08:12,974 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 51 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 11:08:12,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:08:13,006 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:08:13,006 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:08:13,007 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 51 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 11:08:13,009 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:08:13,010 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:08:14,947 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 11:08:15,033 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 11:08:15,034 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 11:08:15,039 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:08:15,067 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:08:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:08:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:08:15,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:15,081 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:15,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 11:08:15,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:15,102 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [665989664] [2020-04-18 11:08:15,122 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,141 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:08:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:08:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:08:15,143 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 11:08:15,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915893735] [2020-04-18 11:08:15,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:15,353 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 11:08:15,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915893735] [2020-04-18 11:08:15,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:15,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:08:15,357 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:15,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,360 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:08:15,361 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:15,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,375 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:08:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,380 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:08:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:08:15,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:15,381 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [665989664] [2020-04-18 11:08:15,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:15,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:08:15,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [665989664] [2020-04-18 11:08:15,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:08:15,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:15,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,390 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:08:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,453 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-18 11:08:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:08:15,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:08:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:15,482 INFO L225 Difference]: With dead ends: 294 [2020-04-18 11:08:15,489 INFO L226 Difference]: Without dead ends: 230 [2020-04-18 11:08:15,493 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 11:08:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-18 11:08:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-18 11:08:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-18 11:08:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-18 11:08:15,569 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-18 11:08:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:15,570 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-18 11:08:15,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:08:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-18 11:08:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:08:15,572 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:15,572 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:15,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-04-18 11:08:15,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:15,573 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [561787789] [2020-04-18 11:08:15,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,574 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:08:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:08:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:08:15,576 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 2 times [2020-04-18 11:08:15,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581265219] [2020-04-18 11:08:15,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:15,640 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 11:08:15,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581265219] [2020-04-18 11:08:15,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:15,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:15,642 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:15,643 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:08:15,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:15,649 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:15,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,650 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:08:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,658 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:08:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:08:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:08:15,658 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash -225370990, now seen corresponding path program 3 times [2020-04-18 11:08:15,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199168599] [2020-04-18 11:08:15,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:15,729 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 11:08:15,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199168599] [2020-04-18 11:08:15,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:15,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:15,732 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:15,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:08:15,734 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:15,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:15,742 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 3 states. [2020-04-18 11:08:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,746 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:08:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:08:15,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:15,747 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [561787789] [2020-04-18 11:08:15,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:15,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:08:15,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [561787789] [2020-04-18 11:08:15,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:08:15,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:15,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:15,750 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 4 states. [2020-04-18 11:08:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,785 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-04-18 11:08:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:08:15,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:08:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:15,788 INFO L225 Difference]: With dead ends: 344 [2020-04-18 11:08:15,788 INFO L226 Difference]: Without dead ends: 254 [2020-04-18 11:08:15,790 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-18 11:08:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-04-18 11:08:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:08:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-04-18 11:08:15,814 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-04-18 11:08:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:15,815 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-04-18 11:08:15,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:08:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-04-18 11:08:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:08:15,816 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:15,816 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:15,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-18 11:08:15,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:15,817 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1441241088] [2020-04-18 11:08:15,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 11:08:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:08:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:08:15,819 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 2 times [2020-04-18 11:08:15,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357334818] [2020-04-18 11:08:15,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:15,852 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 11:08:15,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357334818] [2020-04-18 11:08:15,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:15,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:08:15,854 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:15,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:08:15,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:15,860 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,861 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 11:08:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,862 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-04-18 11:08:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-04-18 11:08:15,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:15,863 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1441241088] [2020-04-18 11:08:15,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:15,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:08:15,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1441241088] [2020-04-18 11:08:15,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:08:15,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:15,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,865 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-04-18 11:08:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,871 INFO L93 Difference]: Finished difference Result 206 states and 529 transitions. [2020-04-18 11:08:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:08:15,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:08:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:15,874 INFO L225 Difference]: With dead ends: 206 [2020-04-18 11:08:15,874 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 11:08:15,875 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 11:08:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 11:08:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-18 11:08:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-18 11:08:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 529 transitions. [2020-04-18 11:08:15,885 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 529 transitions. Word has length 9 [2020-04-18 11:08:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:15,901 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 529 transitions. [2020-04-18 11:08:15,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:08:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 529 transitions. [2020-04-18 11:08:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:08:15,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:15,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:15,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-18 11:08:15,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:15,904 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1935734106] [2020-04-18 11:08:15,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 11:08:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 11:08:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:08:15,906 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1603400938, now seen corresponding path program 2 times [2020-04-18 11:08:15,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596140424] [2020-04-18 11:08:15,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:15,957 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 11:08:15,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596140424] [2020-04-18 11:08:15,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:15,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:15,958 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:15,962 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:15,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 11:08:15,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:15,967 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:15,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:15,968 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 11:08:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:15,971 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 11:08:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 11:08:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:08:15,971 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:15,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 3 times [2020-04-18 11:08:15,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:15,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758972648] [2020-04-18 11:08:15,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,038 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 11:08:16,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758972648] [2020-04-18 11:08:16,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,041 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 11:08:16,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,052 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:08:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:16,054 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 11:08:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,064 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 11:08:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 11:08:16,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:16,065 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1935734106] [2020-04-18 11:08:16,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:16,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:08:16,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1935734106] [2020-04-18 11:08:16,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:08:16,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:16,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:08:16,068 INFO L87 Difference]: Start difference. First operand 206 states and 529 transitions. Second operand 4 states. [2020-04-18 11:08:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,083 INFO L93 Difference]: Finished difference Result 242 states and 592 transitions. [2020-04-18 11:08:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:08:16,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:08:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:16,085 INFO L225 Difference]: With dead ends: 242 [2020-04-18 11:08:16,085 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 11:08:16,086 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 11:08:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 11:08:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 11:08:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 11:08:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 338 transitions. [2020-04-18 11:08:16,097 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 338 transitions. Word has length 10 [2020-04-18 11:08:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:16,097 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 338 transitions. [2020-04-18 11:08:16,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:08:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 338 transitions. [2020-04-18 11:08:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:08:16,099 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:16,099 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:16,099 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 11:08:16,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:16,100 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1300702610] [2020-04-18 11:08:16,100 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,101 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:08:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:08:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:08:16,102 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1834241260, now seen corresponding path program 2 times [2020-04-18 11:08:16,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767250803] [2020-04-18 11:08:16,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,149 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 11:08:16,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767250803] [2020-04-18 11:08:16,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,151 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,154 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 11:08:16,154 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,163 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:16,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:16,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:16,164 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:08:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,171 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:08:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:08:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:08:16,172 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 3 times [2020-04-18 11:08:16,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985725535] [2020-04-18 11:08:16,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,229 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 11:08:16,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985725535] [2020-04-18 11:08:16,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:08:16,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,234 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 11:08:16,234 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,245 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:16,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:16,246 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 11:08:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,247 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:08:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:08:16,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:16,247 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1300702610] [2020-04-18 11:08:16,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:16,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:08:16,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1300702610] [2020-04-18 11:08:16,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:08:16,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:16,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:16,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:08:16,249 INFO L87 Difference]: Start difference. First operand 146 states and 338 transitions. Second operand 4 states. [2020-04-18 11:08:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,268 INFO L93 Difference]: Finished difference Result 134 states and 300 transitions. [2020-04-18 11:08:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:08:16,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 11:08:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:16,270 INFO L225 Difference]: With dead ends: 134 [2020-04-18 11:08:16,270 INFO L226 Difference]: Without dead ends: 110 [2020-04-18 11:08:16,271 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 11:08:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-18 11:08:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-18 11:08:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-18 11:08:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-18 11:08:16,278 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 11 [2020-04-18 11:08:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:16,278 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-18 11:08:16,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:08:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 11:08:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:08:16,279 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:16,279 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:16,279 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,279 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-18 11:08:16,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:16,280 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1311073709] [2020-04-18 11:08:16,280 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 189 transitions. [2020-04-18 11:08:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 11:08:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:08:16,287 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1769255698, now seen corresponding path program 2 times [2020-04-18 11:08:16,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304586456] [2020-04-18 11:08:16,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,342 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 11:08:16,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304586456] [2020-04-18 11:08:16,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,343 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2020-04-18 11:08:16,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,359 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:16,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:16,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:16,360 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-04-18 11:08:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,369 INFO L93 Difference]: Finished difference Result 89 states and 201 transitions. [2020-04-18 11:08:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 201 transitions. [2020-04-18 11:08:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:08:16,370 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1770679978, now seen corresponding path program 3 times [2020-04-18 11:08:16,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639831020] [2020-04-18 11:08:16,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,421 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 11:08:16,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639831020] [2020-04-18 11:08:16,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,423 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,430 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-04-18 11:08:16,430 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:08:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:08:16,481 INFO L87 Difference]: Start difference. First operand 89 states and 201 transitions. Second operand 4 states. [2020-04-18 11:08:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,500 INFO L93 Difference]: Finished difference Result 143 states and 300 transitions. [2020-04-18 11:08:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 300 transitions. [2020-04-18 11:08:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:08:16,502 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:08:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1770580138, now seen corresponding path program 4 times [2020-04-18 11:08:16,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363499851] [2020-04-18 11:08:16,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,555 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 11:08:16,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363499851] [2020-04-18 11:08:16,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,560 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 11:08:16,560 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,572 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:16,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:16,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:08:16,573 INFO L87 Difference]: Start difference. First operand 143 states and 300 transitions. Second operand 3 states. [2020-04-18 11:08:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,577 INFO L93 Difference]: Finished difference Result 158 states and 314 transitions. [2020-04-18 11:08:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 314 transitions. [2020-04-18 11:08:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:08:16,578 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:08:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2090808298, now seen corresponding path program 5 times [2020-04-18 11:08:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:16,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889236475] [2020-04-18 11:08:16,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:16,673 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 11:08:16,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889236475] [2020-04-18 11:08:16,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:16,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:16,675 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:16,677 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:16,684 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-04-18 11:08:16,684 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:16,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:16,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:16,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:08:16,706 INFO L87 Difference]: Start difference. First operand 158 states and 314 transitions. Second operand 4 states. [2020-04-18 11:08:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:16,724 INFO L93 Difference]: Finished difference Result 158 states and 314 transitions. [2020-04-18 11:08:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 314 transitions. [2020-04-18 11:08:16,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:16,725 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1311073709] [2020-04-18 11:08:16,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:16,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:08:16,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1311073709] [2020-04-18 11:08:16,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:08:16,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:08:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:08:16,729 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 8 states. [2020-04-18 11:08:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,100 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-18 11:08:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:08:17,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 11:08:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:17,104 INFO L225 Difference]: With dead ends: 128 [2020-04-18 11:08:17,104 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 11:08:17,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:08:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 11:08:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 11:08:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 11:08:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-18 11:08:17,110 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-18 11:08:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:17,110 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-18 11:08:17,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:08:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-18 11:08:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:17,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:17,113 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:17,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-18 11:08:17,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:17,114 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [577557845] [2020-04-18 11:08:17,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,117 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 260 transitions. [2020-04-18 11:08:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-04-18 11:08:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,121 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 987649501, now seen corresponding path program 2 times [2020-04-18 11:08:17,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220737830] [2020-04-18 11:08:17,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,150 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 11:08:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220737830] [2020-04-18 11:08:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,151 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 51 transitions. [2020-04-18 11:08:17,156 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,160 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:17,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:17,161 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-04-18 11:08:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,166 INFO L93 Difference]: Finished difference Result 118 states and 277 transitions. [2020-04-18 11:08:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 277 transitions. [2020-04-18 11:08:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,167 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash 943528921, now seen corresponding path program 3 times [2020-04-18 11:08:17,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254573872] [2020-04-18 11:08:17,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,193 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 11:08:17,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254573872] [2020-04-18 11:08:17,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,194 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 101 transitions. [2020-04-18 11:08:17,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,220 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:08:17,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:17,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:08:17,221 INFO L87 Difference]: Start difference. First operand 118 states and 277 transitions. Second operand 4 states. [2020-04-18 11:08:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,235 INFO L93 Difference]: Finished difference Result 199 states and 439 transitions. [2020-04-18 11:08:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 439 transitions. [2020-04-18 11:08:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,237 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:08:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash 946590781, now seen corresponding path program 4 times [2020-04-18 11:08:17,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125135506] [2020-04-18 11:08:17,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,260 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 11:08:17,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125135506] [2020-04-18 11:08:17,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 11:08:17,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,271 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:08:17,272 INFO L87 Difference]: Start difference. First operand 199 states and 439 transitions. Second operand 3 states. [2020-04-18 11:08:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,275 INFO L93 Difference]: Finished difference Result 229 states and 482 transitions. [2020-04-18 11:08:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 482 transitions. [2020-04-18 11:08:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,276 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:08:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash -365634117, now seen corresponding path program 5 times [2020-04-18 11:08:17,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980549124] [2020-04-18 11:08:17,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,326 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 11:08:17,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980549124] [2020-04-18 11:08:17,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,327 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 73 transitions. [2020-04-18 11:08:17,333 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,353 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:08:17,354 INFO L87 Difference]: Start difference. First operand 229 states and 482 transitions. Second operand 4 states. [2020-04-18 11:08:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,375 INFO L93 Difference]: Finished difference Result 254 states and 517 transitions. [2020-04-18 11:08:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 517 transitions. [2020-04-18 11:08:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:08:17,376 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:08:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,377 INFO L82 PathProgramCache]: Analyzing trace with hash -341229263, now seen corresponding path program 6 times [2020-04-18 11:08:17,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722968001] [2020-04-18 11:08:17,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,446 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 11:08:17,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722968001] [2020-04-18 11:08:17,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:08:17,448 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,449 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-04-18 11:08:17,454 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,544 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:08:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:08:17,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:08:17,545 INFO L87 Difference]: Start difference. First operand 254 states and 517 transitions. Second operand 7 states. [2020-04-18 11:08:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,582 INFO L93 Difference]: Finished difference Result 254 states and 517 transitions. [2020-04-18 11:08:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 517 transitions. [2020-04-18 11:08:17,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:17,584 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [577557845] [2020-04-18 11:08:17,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:17,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:08:17,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [577557845] [2020-04-18 11:08:17,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:08:17,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:08:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:08:17,585 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 11 states. [2020-04-18 11:08:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,898 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-18 11:08:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:08:17,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 11:08:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:17,900 INFO L225 Difference]: With dead ends: 99 [2020-04-18 11:08:17,900 INFO L226 Difference]: Without dead ends: 79 [2020-04-18 11:08:17,900 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:08:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-18 11:08:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-18 11:08:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-18 11:08:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-18 11:08:17,903 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-18 11:08:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:17,904 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-18 11:08:17,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:08:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-18 11:08:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:17,905 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:17,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:08:17,905 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-18 11:08:17,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:17,906 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [937218228] [2020-04-18 11:08:17,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 11:08:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 11:08:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:17,910 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,911 INFO L82 PathProgramCache]: Analyzing trace with hash 52530391, now seen corresponding path program 2 times [2020-04-18 11:08:17,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409115448] [2020-04-18 11:08:17,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,934 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 11:08:17,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409115448] [2020-04-18 11:08:17,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,935 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions. [2020-04-18 11:08:17,940 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:17,944 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:08:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:17,945 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 11:08:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:17,948 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 11:08:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 11:08:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:17,950 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash 8409811, now seen corresponding path program 3 times [2020-04-18 11:08:17,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:17,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199690997] [2020-04-18 11:08:17,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:17,973 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 11:08:17,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199690997] [2020-04-18 11:08:17,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:17,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:17,974 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:17,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:17,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 113 transitions. [2020-04-18 11:08:17,982 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:18,006 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:08:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:18,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:08:18,007 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 4 states. [2020-04-18 11:08:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:18,024 INFO L93 Difference]: Finished difference Result 271 states and 628 transitions. [2020-04-18 11:08:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 628 transitions. [2020-04-18 11:08:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:18,025 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:08:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash 11471671, now seen corresponding path program 4 times [2020-04-18 11:08:18,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:18,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895657539] [2020-04-18 11:08:18,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:18,056 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 11:08:18,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895657539] [2020-04-18 11:08:18,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:18,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:18,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:18,061 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:18,067 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 11:08:18,067 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:18,078 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:18,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:08:18,080 INFO L87 Difference]: Start difference. First operand 271 states and 628 transitions. Second operand 3 states. [2020-04-18 11:08:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:18,084 INFO L93 Difference]: Finished difference Result 313 states and 693 transitions. [2020-04-18 11:08:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 693 transitions. [2020-04-18 11:08:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:18,086 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:08:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1550269003, now seen corresponding path program 5 times [2020-04-18 11:08:18,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:18,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785909640] [2020-04-18 11:08:18,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:18,200 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 11:08:18,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785909640] [2020-04-18 11:08:18,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:18,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:18,202 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:18,204 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:18,209 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 78 transitions. [2020-04-18 11:08:18,209 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:18,235 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:08:18,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:18,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:08:18,240 INFO L87 Difference]: Start difference. First operand 313 states and 693 transitions. Second operand 4 states. [2020-04-18 11:08:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:18,276 INFO L93 Difference]: Finished difference Result 394 states and 810 transitions. [2020-04-18 11:08:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 810 transitions. [2020-04-18 11:08:18,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:18,278 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:08:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1988147819, now seen corresponding path program 6 times [2020-04-18 11:08:18,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:18,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536836674] [2020-04-18 11:08:18,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:18,383 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 11:08:18,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536836674] [2020-04-18 11:08:18,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:18,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:08:18,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:18,385 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:18,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 11:08:18,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:18,463 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:08:18,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:08:18,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:08:18,463 INFO L87 Difference]: Start difference. First operand 394 states and 810 transitions. Second operand 7 states. [2020-04-18 11:08:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:18,524 INFO L93 Difference]: Finished difference Result 404 states and 818 transitions. [2020-04-18 11:08:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 818 transitions. [2020-04-18 11:08:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:08:18,526 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:08:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1392130067, now seen corresponding path program 7 times [2020-04-18 11:08:18,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:18,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385242625] [2020-04-18 11:08:18,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:18,625 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 11:08:18,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385242625] [2020-04-18 11:08:18,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:18,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:08:18,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:18,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:18,634 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-04-18 11:08:18,634 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:18,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:08:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:08:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:08:18,718 INFO L87 Difference]: Start difference. First operand 404 states and 818 transitions. Second operand 9 states. [2020-04-18 11:08:18,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:18,793 INFO L93 Difference]: Finished difference Result 404 states and 818 transitions. [2020-04-18 11:08:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 818 transitions. [2020-04-18 11:08:18,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:18,796 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [937218228] [2020-04-18 11:08:18,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:18,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:08:18,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [937218228] [2020-04-18 11:08:18,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:08:18,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:18,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:08:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:08:18,798 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 13 states. [2020-04-18 11:08:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,082 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-18 11:08:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 11:08:19,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-04-18 11:08:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:19,084 INFO L225 Difference]: With dead ends: 76 [2020-04-18 11:08:19,084 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 11:08:19,085 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:08:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 11:08:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 11:08:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 11:08:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-18 11:08:19,088 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-18 11:08:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:19,088 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-18 11:08:19,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:08:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-18 11:08:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,089 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:08:19,089 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 11:08:19,089 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:08:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 11:08:19,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:08:19,090 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [419307393] [2020-04-18 11:08:19,091 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:08:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:08:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,101 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:08:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 11:08:19,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748144977] [2020-04-18 11:08:19,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,136 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 11:08:19,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748144977] [2020-04-18 11:08:19,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:19,137 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,138 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-04-18 11:08:19,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,147 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:08:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:08:19,148 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:08:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,152 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 11:08:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 11:08:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,153 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:08:19,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,153 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 11:08:19,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610163248] [2020-04-18 11:08:19,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,185 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 11:08:19,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610163248] [2020-04-18 11:08:19,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:08:19,186 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,188 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 131 transitions. [2020-04-18 11:08:19,196 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,216 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:08:19,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:19,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:08:19,217 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 4 states. [2020-04-18 11:08:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,237 INFO L93 Difference]: Finished difference Result 519 states and 1332 transitions. [2020-04-18 11:08:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1332 transitions. [2020-04-18 11:08:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,239 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:08:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash 732089286, now seen corresponding path program 4 times [2020-04-18 11:08:19,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127155448] [2020-04-18 11:08:19,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,264 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 11:08:19,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127155448] [2020-04-18 11:08:19,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:08:19,265 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 54 transitions. [2020-04-18 11:08:19,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,310 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:08:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:08:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:08:19,310 INFO L87 Difference]: Start difference. First operand 519 states and 1332 transitions. Second operand 5 states. [2020-04-18 11:08:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,368 INFO L93 Difference]: Finished difference Result 779 states and 1908 transitions. [2020-04-18 11:08:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1908 transitions. [2020-04-18 11:08:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,370 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:08:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1872834580, now seen corresponding path program 5 times [2020-04-18 11:08:19,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796692852] [2020-04-18 11:08:19,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,392 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 11:08:19,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796692852] [2020-04-18 11:08:19,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:19,393 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,399 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 52 transitions. [2020-04-18 11:08:19,399 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,409 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:08:19,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:08:19,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:08:19,410 INFO L87 Difference]: Start difference. First operand 779 states and 1908 transitions. Second operand 3 states. [2020-04-18 11:08:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,417 INFO L93 Difference]: Finished difference Result 929 states and 2185 transitions. [2020-04-18 11:08:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2185 transitions. [2020-04-18 11:08:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,421 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:08:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash -545134662, now seen corresponding path program 6 times [2020-04-18 11:08:19,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608804246] [2020-04-18 11:08:19,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,468 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 11:08:19,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608804246] [2020-04-18 11:08:19,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:08:19,469 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,471 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 84 transitions. [2020-04-18 11:08:19,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,503 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:08:19,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:19,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:08:19,504 INFO L87 Difference]: Start difference. First operand 929 states and 2185 transitions. Second operand 4 states. [2020-04-18 11:08:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,538 INFO L93 Difference]: Finished difference Result 1291 states and 2818 transitions. [2020-04-18 11:08:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2818 transitions. [2020-04-18 11:08:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,542 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:08:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 650397828, now seen corresponding path program 7 times [2020-04-18 11:08:19,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663242696] [2020-04-18 11:08:19,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,592 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 11:08:19,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663242696] [2020-04-18 11:08:19,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:08:19,593 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 90 transitions. [2020-04-18 11:08:19,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,689 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:08:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:08:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:08:19,690 INFO L87 Difference]: Start difference. First operand 1291 states and 2818 transitions. Second operand 7 states. [2020-04-18 11:08:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:19,812 INFO L93 Difference]: Finished difference Result 1377 states and 2917 transitions. [2020-04-18 11:08:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2917 transitions. [2020-04-18 11:08:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:19,816 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:08:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2102170498, now seen corresponding path program 8 times [2020-04-18 11:08:19,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:19,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361786770] [2020-04-18 11:08:19,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:19,873 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 11:08:19,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361786770] [2020-04-18 11:08:19,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:19,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:08:19,874 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:19,875 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:19,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 86 transitions. [2020-04-18 11:08:19,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:19,986 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:08:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:08:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:08:19,987 INFO L87 Difference]: Start difference. First operand 1377 states and 2917 transitions. Second operand 9 states. [2020-04-18 11:08:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:20,140 INFO L93 Difference]: Finished difference Result 1385 states and 2921 transitions. [2020-04-18 11:08:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2921 transitions. [2020-04-18 11:08:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:20,144 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:08:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1954137390, now seen corresponding path program 9 times [2020-04-18 11:08:20,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:20,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411950425] [2020-04-18 11:08:20,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:08:20,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411950425] [2020-04-18 11:08:20,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:20,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:08:20,177 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:20,178 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:20,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 63 transitions. [2020-04-18 11:08:20,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:20,248 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:08:20,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:08:20,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:08:20,249 INFO L87 Difference]: Start difference. First operand 1385 states and 2921 transitions. Second operand 6 states. [2020-04-18 11:08:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:20,304 INFO L93 Difference]: Finished difference Result 1625 states and 3446 transitions. [2020-04-18 11:08:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 3446 transitions. [2020-04-18 11:08:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:08:20,307 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:08:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:08:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 10 times [2020-04-18 11:08:20,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:08:20,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328994612] [2020-04-18 11:08:20,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:08:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:08:20,336 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 11:08:20,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328994612] [2020-04-18 11:08:20,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:08:20,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:08:20,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:08:20,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:08:20,341 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 23 transitions. [2020-04-18 11:08:20,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:08:20,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:08:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:08:20,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:08:20,361 INFO L87 Difference]: Start difference. First operand 1625 states and 3446 transitions. Second operand 4 states. [2020-04-18 11:08:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:20,387 INFO L93 Difference]: Finished difference Result 2116 states and 4363 transitions. [2020-04-18 11:08:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 4363 transitions. [2020-04-18 11:08:20,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:20,392 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [419307393] [2020-04-18 11:08:20,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:08:20,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:08:20,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [419307393] [2020-04-18 11:08:20,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 11:08:20,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:08:20,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:08:20,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:08:20,394 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 19 states. [2020-04-18 11:08:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:08:20,939 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-18 11:08:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:08:20,940 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2020-04-18 11:08:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:08:20,941 INFO L225 Difference]: With dead ends: 68 [2020-04-18 11:08:20,941 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:08:20,943 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=1823, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 11:08:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:08:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:08:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:08:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:08:20,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:08:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:08:20,944 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:08:20,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 11:08:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:08:20,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:08:20,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:08:20 BasicIcfg [2020-04-18 11:08:20,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:08:20,950 INFO L168 Benchmark]: Toolchain (without parser) took 9474.72 ms. Allocated memory was 144.2 MB in the beginning and 325.1 MB in the end (delta: 180.9 MB). Free memory was 100.7 MB in the beginning and 238.8 MB in the end (delta: -138.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,950 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.68 ms. Allocated memory was 144.2 MB in the beginning and 199.2 MB in the end (delta: 55.1 MB). Free memory was 98.6 MB in the beginning and 153.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 199.2 MB. Free memory was 153.8 MB in the beginning and 151.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,951 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 199.2 MB. Free memory was 151.7 MB in the beginning and 150.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,952 INFO L168 Benchmark]: RCFGBuilder took 479.70 ms. Allocated memory is still 199.2 MB. Free memory was 150.2 MB in the beginning and 128.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,952 INFO L168 Benchmark]: TraceAbstraction took 8162.29 ms. Allocated memory was 199.2 MB in the beginning and 325.1 MB in the end (delta: 125.8 MB). Free memory was 127.4 MB in the beginning and 238.8 MB in the end (delta: -111.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:08:20,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.68 ms. Allocated memory was 144.2 MB in the beginning and 199.2 MB in the end (delta: 55.1 MB). Free memory was 98.6 MB in the beginning and 153.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 199.2 MB. Free memory was 153.8 MB in the beginning and 151.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 199.2 MB. Free memory was 151.7 MB in the beginning and 150.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.70 ms. Allocated memory is still 199.2 MB. Free memory was 150.2 MB in the beginning and 128.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8162.29 ms. Allocated memory was 199.2 MB in the beginning and 325.1 MB in the end (delta: 125.8 MB). Free memory was 127.4 MB in the beginning and 238.8 MB in the end (delta: -111.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 677 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 169 SDtfs, 395 SDslu, 410 SDs, 0 SdLazy, 463 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 494 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 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...