/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:18:46,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:18:46,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:18:46,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:18:46,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:18:46,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:18:46,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:18:46,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:18:46,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:18:46,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:18:46,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:18:46,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:18:46,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:18:46,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:18:46,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:18:46,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:18:46,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:18:46,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:18:46,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:18:46,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:18:46,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:18:46,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:18:46,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:18:46,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:18:46,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:18:46,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:18:46,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:18:46,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:18:46,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:18:46,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:18:46,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:18:46,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:18:46,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:18:46,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:18:46,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:18:46,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:18:46,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:18:46,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:18:46,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:18:46,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:18:46,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:18:46,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:18:46,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:18:46,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:18:46,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:18:46,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:18:46,210 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:18:46,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:18:46,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:18:46,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:18:46,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:18:46,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:18:46,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:18:46,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:18:46,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:18:46,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:18:46,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:18:46,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:18:46,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:18:46,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:18:46,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:18:46,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:18:46,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:18:46,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:18:46,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:18:46,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:18:46,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:18:46,214 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:18:46,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:18:46,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:18:46,215 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:18:46,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:18:46,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:18:46,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:18:46,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:18:46,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:18:46,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:18:46,571 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:18:46,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-04-18 15:18:46,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21baaf5eb/bebb113b521e44d88415cdfb386c27b6/FLAG7bd671a99 [2020-04-18 15:18:47,138 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:18:47,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-04-18 15:18:47,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21baaf5eb/bebb113b521e44d88415cdfb386c27b6/FLAG7bd671a99 [2020-04-18 15:18:47,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21baaf5eb/bebb113b521e44d88415cdfb386c27b6 [2020-04-18 15:18:47,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:18:47,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:18:47,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:18:47,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:18:47,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:18:47,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:47" (1/1) ... [2020-04-18 15:18:47,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:47, skipping insertion in model container [2020-04-18 15:18:47,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:47" (1/1) ... [2020-04-18 15:18:47,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:18:47,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:18:47,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:18:47,978 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:18:48,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:18:48,229 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:18:48,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48 WrapperNode [2020-04-18 15:18:48,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:18:48,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:18:48,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:18:48,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:18:48,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:18:48,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:18:48,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:18:48,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:18:48,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... [2020-04-18 15:18:48,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:18:48,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:18:48,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:18:48,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:18:48,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:18:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:18:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:18:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:18:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:18:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:18:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:18:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:18:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:18:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:18:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:18:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:18:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:18:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:18:48,378 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:18:48,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:18:48,780 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:18:48,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:48 BoogieIcfgContainer [2020-04-18 15:18:48,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:18:48,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:18:48,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:18:48,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:18:48,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:18:47" (1/3) ... [2020-04-18 15:18:48,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e10d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:48, skipping insertion in model container [2020-04-18 15:18:48,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:48" (2/3) ... [2020-04-18 15:18:48,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e10d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:48, skipping insertion in model container [2020-04-18 15:18:48,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:48" (3/3) ... [2020-04-18 15:18:48,796 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-04-18 15:18:48,805 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:18:48,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:18:48,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:18:48,812 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:18:48,846 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,847 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,847 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,847 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,848 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,848 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,849 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,850 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,850 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,851 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,851 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,851 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,852 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,852 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,853 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,853 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,854 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,854 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,859 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,860 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,860 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,871 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,872 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,872 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,872 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,874 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,875 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,875 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,875 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:48,889 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:18:48,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:18:48,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:18:48,905 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:18:48,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:18:48,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:18:48,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:18:48,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:18:48,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:18:48,921 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:48,923 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:48,966 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:18:48,966 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:18:48,971 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:18:48,975 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:48,998 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:18:48,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:18:48,999 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:18:49,002 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:18:49,003 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:18:50,653 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-04-18 15:18:50,654 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:18:50,660 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:18:50,706 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 15:18:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 15:18:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:18:50,722 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:50,723 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:50,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-04-18 15:18:50,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:50,739 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1256311138] [2020-04-18 15:18:50,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:50,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:18:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:18:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:18:50,782 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 2 times [2020-04-18 15:18:50,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:50,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482727200] [2020-04-18 15:18:50,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482727200] [2020-04-18 15:18:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:18:51,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,111 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,118 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:18:51,119 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,127 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:51,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:51,136 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:18:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,140 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:18:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:18:51,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:51,142 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1256311138] [2020-04-18 15:18:51,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:51,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:18:51,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1256311138] [2020-04-18 15:18:51,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:18:51,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:51,151 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 15:18:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,207 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 15:18:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:18:51,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:18:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:51,246 INFO L225 Difference]: With dead ends: 214 [2020-04-18 15:18:51,246 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 15:18:51,247 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 15:18:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 15:18:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 15:18:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 15:18:51,306 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 15:18:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 15:18:51,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:18:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 15:18:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:18:51,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:51,309 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:51,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-04-18 15:18:51,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:51,310 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2082567282] [2020-04-18 15:18:51,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:18:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:18:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:18:51,312 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 2 times [2020-04-18 15:18:51,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276477531] [2020-04-18 15:18:51,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276477531] [2020-04-18 15:18:51,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:51,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,391 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,393 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:18:51,393 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,408 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:51,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:51,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:51,409 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:18:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,422 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 15:18:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 15:18:51,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:51,423 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2082567282] [2020-04-18 15:18:51,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:51,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:51,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2082567282] [2020-04-18 15:18:51,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:18:51,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:51,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:18:51,430 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 15:18:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,453 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 15:18:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:18:51,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:18:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:51,456 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:18:51,456 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 15:18:51,457 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:18:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 15:18:51,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 15:18:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 15:18:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 15:18:51,471 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 15:18:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:51,471 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 15:18:51,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:18:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 15:18:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:51,473 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:51,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:51,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-04-18 15:18:51,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:51,474 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [201906912] [2020-04-18 15:18:51,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,475 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:18:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:18:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:51,476 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash -317354737, now seen corresponding path program 2 times [2020-04-18 15:18:51,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538766751] [2020-04-18 15:18:51,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538766751] [2020-04-18 15:18:51,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:51,535 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:18:51,538 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,552 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:51,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:51,553 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 15:18:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,565 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-04-18 15:18:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-04-18 15:18:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:51,566 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 3 times [2020-04-18 15:18:51,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495430986] [2020-04-18 15:18:51,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495430986] [2020-04-18 15:18:51,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:18:51,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:18:51,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,640 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:51,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:18:51,641 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand 3 states. [2020-04-18 15:18:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,641 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-04-18 15:18:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-04-18 15:18:51,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:51,644 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [201906912] [2020-04-18 15:18:51,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:51,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:18:51,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [201906912] [2020-04-18 15:18:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:18:51,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:18:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:18:51,645 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 5 states. [2020-04-18 15:18:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,685 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-04-18 15:18:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:18:51,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 15:18:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:51,693 INFO L225 Difference]: With dead ends: 124 [2020-04-18 15:18:51,693 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:18:51,694 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:18:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:18:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:18:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:18:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-04-18 15:18:51,706 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-04-18 15:18:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:51,706 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-04-18 15:18:51,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:18:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-04-18 15:18:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:51,707 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:51,707 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:51,708 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-04-18 15:18:51,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:51,709 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1347473543] [2020-04-18 15:18:51,709 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 15:18:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:18:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:51,711 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1215161218, now seen corresponding path program 2 times [2020-04-18 15:18:51,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-18 15:18:51,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-18 15:18:51,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:51,770 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 37 transitions. [2020-04-18 15:18:51,774 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,784 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:51,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:51,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:51,785 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 15:18:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,808 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 15:18:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 15:18:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:51,809 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 3 times [2020-04-18 15:18:51,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591385859] [2020-04-18 15:18:51,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:51,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591385859] [2020-04-18 15:18:51,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:51,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:51,880 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:51,881 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,885 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-04-18 15:18:51,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:51,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:51,901 INFO L87 Difference]: Start difference. First operand 44 states and 83 transitions. Second operand 4 states. [2020-04-18 15:18:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,913 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 15:18:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 15:18:51,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:51,914 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1347473543] [2020-04-18 15:18:51,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:51,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:51,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1347473543] [2020-04-18 15:18:51,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:18:51,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:18:51,918 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 6 states. [2020-04-18 15:18:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:51,976 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-04-18 15:18:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:18:51,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:18:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:51,977 INFO L225 Difference]: With dead ends: 142 [2020-04-18 15:18:51,978 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 15:18:51,978 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 15:18:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-04-18 15:18:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-18 15:18:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-04-18 15:18:51,985 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-04-18 15:18:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:51,985 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-04-18 15:18:51,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:18:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-04-18 15:18:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:51,987 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:51,987 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:51,987 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,988 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-04-18 15:18:51,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:51,989 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1396307904] [2020-04-18 15:18:51,989 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:51,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 108 transitions. [2020-04-18 15:18:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 15:18:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:51,997 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:51,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -984768229, now seen corresponding path program 2 times [2020-04-18 15:18:51,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:51,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329637047] [2020-04-18 15:18:51,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329637047] [2020-04-18 15:18:52,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:52,047 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,048 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,051 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 50 transitions. [2020-04-18 15:18:52,052 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,064 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:52,065 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-04-18 15:18:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,079 INFO L93 Difference]: Finished difference Result 62 states and 128 transitions. [2020-04-18 15:18:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 128 transitions. [2020-04-18 15:18:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:52,079 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash -967468339, now seen corresponding path program 3 times [2020-04-18 15:18:52,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734926650] [2020-04-18 15:18:52,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734926650] [2020-04-18 15:18:52,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:52,110 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,111 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 50 transitions. [2020-04-18 15:18:52,115 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:52,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:52,128 INFO L87 Difference]: Start difference. First operand 62 states and 128 transitions. Second operand 4 states. [2020-04-18 15:18:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,142 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 15:18:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 15:18:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:52,143 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 4 times [2020-04-18 15:18:52,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429284869] [2020-04-18 15:18:52,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429284869] [2020-04-18 15:18:52,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:52,197 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,198 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 15:18:52,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,241 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:52,241 INFO L87 Difference]: Start difference. First operand 71 states and 137 transitions. Second operand 4 states. [2020-04-18 15:18:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,254 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 15:18:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 15:18:52,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:52,255 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1396307904] [2020-04-18 15:18:52,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:52,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:52,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1396307904] [2020-04-18 15:18:52,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:18:52,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:52,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:18:52,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:18:52,257 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 8 states. [2020-04-18 15:18:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,533 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-04-18 15:18:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:18:52,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 15:18:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:52,534 INFO L225 Difference]: With dead ends: 77 [2020-04-18 15:18:52,534 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 15:18:52,535 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:18:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 15:18:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 15:18:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 15:18:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-04-18 15:18:52,540 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-04-18 15:18:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:52,540 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-04-18 15:18:52,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:18:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-04-18 15:18:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:52,541 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:52,541 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:52,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-04-18 15:18:52,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:52,542 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [710591209] [2020-04-18 15:18:52,543 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 15:18:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 15:18:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:52,546 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:52,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,546 INFO L82 PathProgramCache]: Analyzing trace with hash -463043823, now seen corresponding path program 2 times [2020-04-18 15:18:52,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738656486] [2020-04-18 15:18:52,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738656486] [2020-04-18 15:18:52,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:52,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,603 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 60 transitions. [2020-04-18 15:18:52,603 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,613 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:52,614 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 15:18:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,630 INFO L93 Difference]: Finished difference Result 96 states and 221 transitions. [2020-04-18 15:18:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 221 transitions. [2020-04-18 15:18:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:52,630 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,631 INFO L82 PathProgramCache]: Analyzing trace with hash 73238367, now seen corresponding path program 3 times [2020-04-18 15:18:52,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165612845] [2020-04-18 15:18:52,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165612845] [2020-04-18 15:18:52,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:52,704 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,706 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 65 transitions. [2020-04-18 15:18:52,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,725 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:52,726 INFO L87 Difference]: Start difference. First operand 96 states and 221 transitions. Second operand 4 states. [2020-04-18 15:18:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,745 INFO L93 Difference]: Finished difference Result 111 states and 240 transitions. [2020-04-18 15:18:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 240 transitions. [2020-04-18 15:18:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:52,745 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1676497961, now seen corresponding path program 4 times [2020-04-18 15:18:52,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 15:18:52,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 15:18:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:52,822 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,828 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:18:52,828 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:52,851 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:52,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:52,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:52,854 INFO L87 Difference]: Start difference. First operand 111 states and 240 transitions. Second operand 4 states. [2020-04-18 15:18:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:52,872 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 15:18:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 15:18:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:52,873 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 5 times [2020-04-18 15:18:52,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:52,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514182207] [2020-04-18 15:18:52,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:52,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514182207] [2020-04-18 15:18:52,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:52,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:52,949 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:52,950 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:52,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:18:52,955 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,016 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:18:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:18:53,017 INFO L87 Difference]: Start difference. First operand 135 states and 274 transitions. Second operand 6 states. [2020-04-18 15:18:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,038 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 15:18:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 15:18:53,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:53,039 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [710591209] [2020-04-18 15:18:53,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:53,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:18:53,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [710591209] [2020-04-18 15:18:53,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:18:53,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:53,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:18:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:18:53,041 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 10 states. [2020-04-18 15:18:53,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,252 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-04-18 15:18:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 15:18:53,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 15:18:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:53,254 INFO L225 Difference]: With dead ends: 57 [2020-04-18 15:18:53,254 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 15:18:53,255 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:18:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 15:18:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 15:18:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 15:18:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-04-18 15:18:53,258 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-04-18 15:18:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:53,259 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-04-18 15:18:53,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:18:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-04-18 15:18:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,259 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:53,260 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:53,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-04-18 15:18:53,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:53,261 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1748339661] [2020-04-18 15:18:53,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,263 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 15:18:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 15:18:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,264 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1469783626, now seen corresponding path program 2 times [2020-04-18 15:18:53,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:53,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607629171] [2020-04-18 15:18:53,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:53,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607629171] [2020-04-18 15:18:53,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:53,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:53,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:53,300 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 61 transitions. [2020-04-18 15:18:53,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,313 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:53,314 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-04-18 15:18:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,326 INFO L93 Difference]: Finished difference Result 126 states and 304 transitions. [2020-04-18 15:18:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 304 transitions. [2020-04-18 15:18:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,327 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2024577710, now seen corresponding path program 3 times [2020-04-18 15:18:53,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:53,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893851637] [2020-04-18 15:18:53,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:53,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893851637] [2020-04-18 15:18:53,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:53,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:53,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:53,358 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 68 transitions. [2020-04-18 15:18:53,361 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:53,376 INFO L87 Difference]: Start difference. First operand 126 states and 304 transitions. Second operand 4 states. [2020-04-18 15:18:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,389 INFO L93 Difference]: Finished difference Result 156 states and 357 transitions. [2020-04-18 15:18:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 357 transitions. [2020-04-18 15:18:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,390 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,390 INFO L82 PathProgramCache]: Analyzing trace with hash -431805210, now seen corresponding path program 4 times [2020-04-18 15:18:53,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:53,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144705464] [2020-04-18 15:18:53,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:53,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144705464] [2020-04-18 15:18:53,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:53,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:53,429 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:53,430 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:18:53,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,456 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:53,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:53,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:53,457 INFO L87 Difference]: Start difference. First operand 156 states and 357 transitions. Second operand 4 states. [2020-04-18 15:18:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,480 INFO L93 Difference]: Finished difference Result 210 states and 446 transitions. [2020-04-18 15:18:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 446 transitions. [2020-04-18 15:18:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,482 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1487856390, now seen corresponding path program 5 times [2020-04-18 15:18:53,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:53,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337173514] [2020-04-18 15:18:53,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:53,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337173514] [2020-04-18 15:18:53,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:53,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:53,524 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:53,525 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:18:53,530 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,603 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:53,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:18:53,604 INFO L87 Difference]: Start difference. First operand 210 states and 446 transitions. Second operand 6 states. [2020-04-18 15:18:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,657 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 15:18:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 15:18:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:53,658 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:18:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 6 times [2020-04-18 15:18:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:53,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:18:53,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:53,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:18:53,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:53,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:53,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:53,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:53,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 15:18:53,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:53,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:53,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:18:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:18:53,816 INFO L87 Difference]: Start difference. First operand 222 states and 456 transitions. Second operand 7 states. [2020-04-18 15:18:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:53,863 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 15:18:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 15:18:53,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:53,865 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1748339661] [2020-04-18 15:18:53,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:53,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:18:53,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1748339661] [2020-04-18 15:18:53,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:18:53,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:53,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:18:53,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:18:53,866 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 11 states. [2020-04-18 15:18:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,040 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 15:18:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:18:54,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 15:18:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:54,042 INFO L225 Difference]: With dead ends: 39 [2020-04-18 15:18:54,042 INFO L226 Difference]: Without dead ends: 33 [2020-04-18 15:18:54,042 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:18:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-18 15:18:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-18 15:18:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-18 15:18:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-18 15:18:54,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-04-18 15:18:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:54,045 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-18 15:18:54,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:18:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 15:18:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,046 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:54,046 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:54,046 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,047 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-04-18 15:18:54,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:54,047 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1023450555] [2020-04-18 15:18:54,048 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,051 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 15:18:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 15:18:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,054 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,054 INFO L82 PathProgramCache]: Analyzing trace with hash 96402109, now seen corresponding path program 2 times [2020-04-18 15:18:54,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853485] [2020-04-18 15:18:54,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853485] [2020-04-18 15:18:54,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:54,083 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,084 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 87 transitions. [2020-04-18 15:18:54,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,110 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:54,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:54,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:54,112 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 15:18:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,127 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 15:18:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 668 transitions. [2020-04-18 15:18:54,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,128 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1656015001, now seen corresponding path program 3 times [2020-04-18 15:18:54,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547756979] [2020-04-18 15:18:54,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547756979] [2020-04-18 15:18:54,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:54,172 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,173 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,177 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 70 transitions. [2020-04-18 15:18:54,178 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,191 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:54,192 INFO L87 Difference]: Start difference. First operand 250 states and 668 transitions. Second operand 4 states. [2020-04-18 15:18:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,206 INFO L93 Difference]: Finished difference Result 340 states and 887 transitions. [2020-04-18 15:18:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 887 transitions. [2020-04-18 15:18:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,207 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1646955883, now seen corresponding path program 4 times [2020-04-18 15:18:54,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22164361] [2020-04-18 15:18:54,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22164361] [2020-04-18 15:18:54,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:54,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,246 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 15:18:54,246 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:18:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:18:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:18:54,304 INFO L87 Difference]: Start difference. First operand 340 states and 887 transitions. Second operand 5 states. [2020-04-18 15:18:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,338 INFO L93 Difference]: Finished difference Result 500 states and 1227 transitions. [2020-04-18 15:18:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1227 transitions. [2020-04-18 15:18:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,339 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1647025633, now seen corresponding path program 5 times [2020-04-18 15:18:54,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317948158] [2020-04-18 15:18:54,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317948158] [2020-04-18 15:18:54,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:54,415 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,416 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,419 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 15:18:54,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,444 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:18:54,445 INFO L87 Difference]: Start difference. First operand 500 states and 1227 transitions. Second operand 4 states. [2020-04-18 15:18:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,475 INFO L93 Difference]: Finished difference Result 734 states and 1676 transitions. [2020-04-18 15:18:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1676 transitions. [2020-04-18 15:18:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,478 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:18:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,478 INFO L82 PathProgramCache]: Analyzing trace with hash -394114047, now seen corresponding path program 6 times [2020-04-18 15:18:54,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966811029] [2020-04-18 15:18:54,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966811029] [2020-04-18 15:18:54,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:54,516 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,517 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 42 transitions. [2020-04-18 15:18:54,520 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,564 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:54,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:18:54,565 INFO L87 Difference]: Start difference. First operand 734 states and 1676 transitions. Second operand 6 states. [2020-04-18 15:18:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,663 INFO L93 Difference]: Finished difference Result 826 states and 1792 transitions. [2020-04-18 15:18:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1792 transitions. [2020-04-18 15:18:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:54,666 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:18:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash -943469479, now seen corresponding path program 7 times [2020-04-18 15:18:54,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:54,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047082315] [2020-04-18 15:18:54,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:54,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047082315] [2020-04-18 15:18:54,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:54,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:18:54,715 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:54,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:54,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:18:54,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:54,779 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:54,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:18:54,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:18:54,780 INFO L87 Difference]: Start difference. First operand 826 states and 1792 transitions. Second operand 7 states. [2020-04-18 15:18:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:54,929 INFO L93 Difference]: Finished difference Result 840 states and 1799 transitions. [2020-04-18 15:18:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1799 transitions. [2020-04-18 15:18:54,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:54,933 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1023450555] [2020-04-18 15:18:54,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:54,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:18:54,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1023450555] [2020-04-18 15:18:54,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:18:54,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:54,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:18:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:18:54,936 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 14 states. [2020-04-18 15:18:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:55,281 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-18 15:18:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:18:55,282 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-04-18 15:18:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:55,282 INFO L225 Difference]: With dead ends: 32 [2020-04-18 15:18:55,282 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:18:55,283 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 15:18:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:18:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:18:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:18:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:18:55,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:18:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:55,284 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:18:55,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:18:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:18:55,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:55,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:18:55 BasicIcfg [2020-04-18 15:18:55,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:18:55,291 INFO L168 Benchmark]: Toolchain (without parser) took 7818.29 ms. Allocated memory was 144.2 MB in the beginning and 327.2 MB in the end (delta: 183.0 MB). Free memory was 100.7 MB in the beginning and 271.3 MB in the end (delta: -170.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,292 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.56 ms. Allocated memory was 144.2 MB in the beginning and 225.4 MB in the end (delta: 81.3 MB). Free memory was 98.8 MB in the beginning and 191.1 MB in the end (delta: -92.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 225.4 MB. Free memory was 191.1 MB in the beginning and 189.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,297 INFO L168 Benchmark]: Boogie Preprocessor took 27.46 ms. Allocated memory is still 225.4 MB. Free memory was 188.3 MB in the beginning and 187.4 MB in the end (delta: 930.0 kB). Peak memory consumption was 930.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,299 INFO L168 Benchmark]: RCFGBuilder took 476.76 ms. Allocated memory is still 225.4 MB. Free memory was 187.4 MB in the beginning and 164.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:55,299 INFO L168 Benchmark]: TraceAbstraction took 6503.43 ms. Allocated memory was 225.4 MB in the beginning and 327.2 MB in the end (delta: 101.7 MB). Free memory was 163.3 MB in the beginning and 271.3 MB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:18:55,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.56 ms. Allocated memory was 144.2 MB in the beginning and 225.4 MB in the end (delta: 81.3 MB). Free memory was 98.8 MB in the beginning and 191.1 MB in the end (delta: -92.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.01 ms. Allocated memory is still 225.4 MB. Free memory was 191.1 MB in the beginning and 189.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.46 ms. Allocated memory is still 225.4 MB. Free memory was 188.3 MB in the beginning and 187.4 MB in the end (delta: 930.0 kB). Peak memory consumption was 930.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 476.76 ms. Allocated memory is still 225.4 MB. Free memory was 187.4 MB in the beginning and 164.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6503.43 ms. Allocated memory was 225.4 MB in the beginning and 327.2 MB in the end (delta: 101.7 MB). Free memory was 163.3 MB in the beginning and 271.3 MB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 610 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 118 SDtfs, 257 SDslu, 256 SDs, 0 SdLazy, 324 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 312 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...