/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:46:52,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:46:52,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:46:52,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:46:52,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:46:52,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:46:52,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:46:52,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:46:52,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:46:52,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:46:52,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:46:52,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:46:52,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:46:52,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:46:52,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:46:52,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:46:52,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:46:52,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:46:52,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:46:52,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:46:52,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:46:52,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:46:52,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:46:52,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:46:52,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:46:52,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:46:52,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:46:52,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:46:52,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:46:52,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:46:52,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:46:52,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:46:52,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:46:52,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:46:52,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:46:52,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:46:52,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:46:52,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:46:52,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:46:52,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:46:52,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:46:52,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:46:52,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:46:52,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:46:52,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:46:52,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:46:52,187 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:46:52,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:46:52,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:46:52,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:46:52,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:46:52,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:46:52,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:46:52,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:46:52,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:46:52,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:46:52,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:46:52,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:46:52,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:46:52,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:46:52,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:46:52,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:46:52,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:46:52,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:46:52,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:46:52,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:46:52,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:46:52,195 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:46:52,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:46:52,196 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:46:52,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:46:52,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:46:52,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:46:52,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:46:52,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:46:52,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:46:52,524 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:46:52,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 10:46:52,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7fa3d6f4/1ac90e9757544ff78b242f5dcfc34e70/FLAG71ffa9e37 [2020-04-18 10:46:53,153 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:46:53,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 10:46:53,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7fa3d6f4/1ac90e9757544ff78b242f5dcfc34e70/FLAG71ffa9e37 [2020-04-18 10:46:53,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7fa3d6f4/1ac90e9757544ff78b242f5dcfc34e70 [2020-04-18 10:46:53,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:46:53,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:46:53,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:46:53,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:46:53,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:46:53,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:46:53" (1/1) ... [2020-04-18 10:46:53,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6625d01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:53, skipping insertion in model container [2020-04-18 10:46:53,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:46:53" (1/1) ... [2020-04-18 10:46:53,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:46:53,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:46:54,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:46:54,061 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:46:54,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:46:54,205 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:46:54,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54 WrapperNode [2020-04-18 10:46:54,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:46:54,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:46:54,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:46:54,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:46:54,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:46:54,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:46:54,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:46:54,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:46:54,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (1/1) ... [2020-04-18 10:46:54,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:46:54,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:46:54,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:46:54,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:46:54,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (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 10:46:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:46:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:46:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:46:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:46:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:46:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:46:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:46:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:46:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:46:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:46:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:46:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:46:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:46:54,356 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 10:46:54,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:46:54,721 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:46:54,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:46:54 BoogieIcfgContainer [2020-04-18 10:46:54,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:46:54,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:46:54,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:46:54,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:46:54,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:46:53" (1/3) ... [2020-04-18 10:46:54,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5950d77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:46:54, skipping insertion in model container [2020-04-18 10:46:54,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:46:54" (2/3) ... [2020-04-18 10:46:54,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5950d77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:46:54, skipping insertion in model container [2020-04-18 10:46:54,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:46:54" (3/3) ... [2020-04-18 10:46:54,734 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-04-18 10:46:54,744 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:46:54,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:46:54,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:46:54,753 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:46:54,793 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,793 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,793 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,794 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,794 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,794 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,795 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,795 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,795 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,795 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,796 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,796 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,796 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,796 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,797 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,797 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,797 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,797 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,801 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,801 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,802 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,802 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,807 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,808 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,810 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,811 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:46:54,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:46:54,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:46:54,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:46:54,843 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:46:54,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:46:54,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:46:54,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:46:54,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:46:54,843 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:46:54,858 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 10:46:54,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 10:46:54,903 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 10:46:54,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:46:54,909 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:46:54,911 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 10:46:54,931 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 10:46:54,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:46:54,932 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:46:54,934 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-18 10:46:54,935 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:46:56,598 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 10:46:56,644 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-18 10:46:56,645 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 10:46:56,649 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 10:46:56,673 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-18 10:46:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:46:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:46:56,683 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:56,683 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:56,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:56,688 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-18 10:46:56,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:56,694 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1807514763] [2020-04-18 10:46:56,706 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:56,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:46:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:46:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:46:56,721 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 2 times [2020-04-18 10:46:56,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:56,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727706435] [2020-04-18 10:46:56,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:56,953 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 10:46:56,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727706435] [2020-04-18 10:46:56,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:56,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:46:56,958 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:56,960 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:56,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:46:56,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:56,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:46:56,984 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:46:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:56,989 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:46:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:46:56,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:56,991 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1807514763] [2020-04-18 10:46:56,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:56,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:46:56,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1807514763] [2020-04-18 10:46:56,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:46:56,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:57,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:46:57,000 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:46:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,054 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-18 10:46:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:46:57,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:46:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:57,086 INFO L225 Difference]: With dead ends: 226 [2020-04-18 10:46:57,087 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 10:46:57,088 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 10:46:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 10:46:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-18 10:46:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 10:46:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-18 10:46:57,158 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-18 10:46:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:57,159 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-18 10:46:57,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:46:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-18 10:46:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:46:57,161 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:57,161 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:57,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-18 10:46:57,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:57,162 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [157508231] [2020-04-18 10:46:57,163 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:46:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:46:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:46:57,164 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 2 times [2020-04-18 10:46:57,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263523479] [2020-04-18 10:46:57,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,245 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 10:46:57,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263523479] [2020-04-18 10:46:57,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:46:57,246 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,248 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:46:57,248 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,252 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:46:57,253 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:46:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,254 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 10:46:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 10:46:57,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:57,255 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [157508231] [2020-04-18 10:46:57,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:57,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:46:57,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [157508231] [2020-04-18 10:46:57,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:46:57,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:57,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:57,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:46:57,257 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-18 10:46:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,266 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-18 10:46:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:46:57,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 10:46:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:57,269 INFO L225 Difference]: With dead ends: 168 [2020-04-18 10:46:57,270 INFO L226 Difference]: Without dead ends: 168 [2020-04-18 10:46:57,271 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:46:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-18 10:46:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-18 10:46:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-18 10:46:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-18 10:46:57,291 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-18 10:46:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:57,292 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-18 10:46:57,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:46:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-18 10:46:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:46:57,294 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:57,294 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:57,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-18 10:46:57,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:57,295 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [627100189] [2020-04-18 10:46:57,296 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 10:46:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 10:46:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:46:57,297 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,298 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 2 times [2020-04-18 10:46:57,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496213449] [2020-04-18 10:46:57,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,369 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 10:46:57,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496213449] [2020-04-18 10:46:57,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:57,371 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,373 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 10:46:57,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,381 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:57,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:57,382 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 10:46:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,401 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2020-04-18 10:46:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-04-18 10:46:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:46:57,402 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 3 times [2020-04-18 10:46:57,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135196502] [2020-04-18 10:46:57,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,473 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 10:46:57,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135196502] [2020-04-18 10:46:57,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:46:57,475 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,476 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 10:46:57,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,483 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:57,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:57,485 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand 3 states. [2020-04-18 10:46:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,486 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2020-04-18 10:46:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-04-18 10:46:57,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:57,487 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [627100189] [2020-04-18 10:46:57,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:57,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:46:57,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [627100189] [2020-04-18 10:46:57,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:46:57,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:57,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:57,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:57,488 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 5 states. [2020-04-18 10:46:57,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,550 INFO L93 Difference]: Finished difference Result 234 states and 596 transitions. [2020-04-18 10:46:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:46:57,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 10:46:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:57,552 INFO L225 Difference]: With dead ends: 234 [2020-04-18 10:46:57,553 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 10:46:57,553 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 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 10:46:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 10:46:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 10:46:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 10:46:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-18 10:46:57,577 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-18 10:46:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:57,577 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-18 10:46:57,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:46:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-18 10:46:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:57,580 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:57,581 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:57,581 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,581 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-18 10:46:57,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:57,582 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [779615281] [2020-04-18 10:46:57,583 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,584 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 10:46:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 10:46:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:57,589 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,590 INFO L82 PathProgramCache]: Analyzing trace with hash -760978670, now seen corresponding path program 2 times [2020-04-18 10:46:57,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527225985] [2020-04-18 10:46:57,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,664 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 10:46:57,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527225985] [2020-04-18 10:46:57,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:57,666 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,670 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 10:46:57,670 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:57,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:57,679 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 10:46:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,693 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 10:46:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 10:46:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:57,694 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash 452544104, now seen corresponding path program 3 times [2020-04-18 10:46:57,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40919936] [2020-04-18 10:46:57,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,753 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 10:46:57,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40919936] [2020-04-18 10:46:57,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:57,755 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,759 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,761 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-04-18 10:46:57,761 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,768 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:57,769 INFO L87 Difference]: Start difference. First operand 44 states and 83 transitions. Second operand 3 states. [2020-04-18 10:46:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,773 INFO L93 Difference]: Finished difference Result 49 states and 87 transitions. [2020-04-18 10:46:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 87 transitions. [2020-04-18 10:46:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:46:57,774 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 4 times [2020-04-18 10:46:57,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:57,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715611731] [2020-04-18 10:46:57,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:57,831 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 10:46:57,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715611731] [2020-04-18 10:46:57,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:57,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:57,833 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:57,834 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:57,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-04-18 10:46:57,837 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:57,909 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:46:57,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:57,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:46:57,910 INFO L87 Difference]: Start difference. First operand 49 states and 87 transitions. Second operand 5 states. [2020-04-18 10:46:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:57,926 INFO L93 Difference]: Finished difference Result 49 states and 87 transitions. [2020-04-18 10:46:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 87 transitions. [2020-04-18 10:46:57,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:57,928 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [779615281] [2020-04-18 10:46:57,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:57,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:57,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [779615281] [2020-04-18 10:46:57,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:46:57,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:46:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:46:57,929 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 8 states. [2020-04-18 10:46:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,020 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-18 10:46:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 10:46:58,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-04-18 10:46:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:58,021 INFO L225 Difference]: With dead ends: 144 [2020-04-18 10:46:58,021 INFO L226 Difference]: Without dead ends: 60 [2020-04-18 10:46:58,022 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:46:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-18 10:46:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-18 10:46:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-18 10:46:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-18 10:46:58,034 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-18 10:46:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:58,036 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-18 10:46:58,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:46:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-18 10:46:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:58,037 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:58,037 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:58,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-18 10:46:58,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:58,038 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1230663404] [2020-04-18 10:46:58,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 10:46:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 10:46:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:58,043 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,043 INFO L82 PathProgramCache]: Analyzing trace with hash -197698324, now seen corresponding path program 2 times [2020-04-18 10:46:58,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180260151] [2020-04-18 10:46:58,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,081 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 10:46:58,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180260151] [2020-04-18 10:46:58,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:58,082 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,083 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,087 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-04-18 10:46:58,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,094 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:58,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:58,095 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-04-18 10:46:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,110 INFO L93 Difference]: Finished difference Result 68 states and 142 transitions. [2020-04-18 10:46:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 142 transitions. [2020-04-18 10:46:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:58,112 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1143894380, now seen corresponding path program 3 times [2020-04-18 10:46:58,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796932154] [2020-04-18 10:46:58,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,153 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 10:46:58,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796932154] [2020-04-18 10:46:58,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:58,154 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,155 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,158 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:46:58,158 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,165 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:58,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:58,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:58,166 INFO L87 Difference]: Start difference. First operand 68 states and 142 transitions. Second operand 3 states. [2020-04-18 10:46:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,170 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 10:46:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 10:46:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:46:58,171 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 4 times [2020-04-18 10:46:58,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735899124] [2020-04-18 10:46:58,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,278 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 10:46:58,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735899124] [2020-04-18 10:46:58,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:58,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,283 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:46:58,283 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,300 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:46:58,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:46:58,301 INFO L87 Difference]: Start difference. First operand 76 states and 150 transitions. Second operand 4 states. [2020-04-18 10:46:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,313 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 10:46:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 10:46:58,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:58,314 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1230663404] [2020-04-18 10:46:58,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:58,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:46:58,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1230663404] [2020-04-18 10:46:58,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:46:58,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:46:58,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:46:58,315 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 7 states. [2020-04-18 10:46:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,531 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-18 10:46:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:46:58,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 10:46:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:58,534 INFO L225 Difference]: With dead ends: 73 [2020-04-18 10:46:58,534 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 10:46:58,534 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:46:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 10:46:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 10:46:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 10:46:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-18 10:46:58,539 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-18 10:46:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:58,540 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-18 10:46:58,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:46:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-18 10:46:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:58,541 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:58,541 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:58,542 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:58,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-18 10:46:58,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:58,542 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1415102481] [2020-04-18 10:46:58,543 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,545 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 173 transitions. [2020-04-18 10:46:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 10:46:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:58,554 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1833698849, now seen corresponding path program 2 times [2020-04-18 10:46:58,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423863432] [2020-04-18 10:46:58,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,602 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 10:46:58,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423863432] [2020-04-18 10:46:58,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:58,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 10:46:58,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,618 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:58,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:58,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:58,620 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 10:46:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,635 INFO L93 Difference]: Finished difference Result 98 states and 225 transitions. [2020-04-18 10:46:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 225 transitions. [2020-04-18 10:46:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:58,636 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1100969311, now seen corresponding path program 3 times [2020-04-18 10:46:58,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154446113] [2020-04-18 10:46:58,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,666 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 10:46:58,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154446113] [2020-04-18 10:46:58,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:58,668 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,669 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 10:46:58,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,681 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:58,682 INFO L87 Difference]: Start difference. First operand 98 states and 225 transitions. Second operand 3 states. [2020-04-18 10:46:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,689 INFO L93 Difference]: Finished difference Result 111 states and 241 transitions. [2020-04-18 10:46:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 241 transitions. [2020-04-18 10:46:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:58,690 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1100968411, now seen corresponding path program 4 times [2020-04-18 10:46:58,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664313328] [2020-04-18 10:46:58,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,764 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 10:46:58,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664313328] [2020-04-18 10:46:58,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:58,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,769 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 10:46:58,769 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:46:58,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:58,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:46:58,788 INFO L87 Difference]: Start difference. First operand 111 states and 241 transitions. Second operand 4 states. [2020-04-18 10:46:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,806 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 10:46:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 10:46:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:46:58,807 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:46:58,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:58,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 5 times [2020-04-18 10:46:58,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:58,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352788983] [2020-04-18 10:46:58,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:58,876 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 10:46:58,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352788983] [2020-04-18 10:46:58,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:58,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:58,877 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:58,877 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:58,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 10:46:58,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:58,896 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:46:58,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:58,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:46:58,896 INFO L87 Difference]: Start difference. First operand 136 states and 276 transitions. Second operand 5 states. [2020-04-18 10:46:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:58,919 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 10:46:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 10:46:58,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:58,920 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1415102481] [2020-04-18 10:46:58,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:58,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:46:58,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1415102481] [2020-04-18 10:46:58,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:46:58,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:46:58,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:46:58,921 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 8 states. [2020-04-18 10:46:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,073 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-18 10:46:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:46:59,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 10:46:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:59,075 INFO L225 Difference]: With dead ends: 53 [2020-04-18 10:46:59,075 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 10:46:59,076 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:46:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 10:46:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 10:46:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 10:46:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-18 10:46:59,085 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-18 10:46:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:59,085 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-18 10:46:59,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:46:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-18 10:46:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:59,086 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:59,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-18 10:46:59,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:59,088 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [273381883] [2020-04-18 10:46:59,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,090 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 238 transitions. [2020-04-18 10:46:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 10:46:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,094 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1010088817, now seen corresponding path program 2 times [2020-04-18 10:46:59,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736006911] [2020-04-18 10:46:59,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,124 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 10:46:59,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736006911] [2020-04-18 10:46:59,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:59,125 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,126 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 10:46:59,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,137 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:59,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:59,139 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 4 states. [2020-04-18 10:46:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,156 INFO L93 Difference]: Finished difference Result 134 states and 322 transitions. [2020-04-18 10:46:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 322 transitions. [2020-04-18 10:46:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,157 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,159 INFO L82 PathProgramCache]: Analyzing trace with hash -229689073, now seen corresponding path program 3 times [2020-04-18 10:46:59,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087207895] [2020-04-18 10:46:59,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,192 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 10:46:59,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087207895] [2020-04-18 10:46:59,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:59,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,194 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-04-18 10:46:59,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:59,215 INFO L87 Difference]: Start difference. First operand 134 states and 322 transitions. Second operand 3 states. [2020-04-18 10:46:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,218 INFO L93 Difference]: Finished difference Result 152 states and 346 transitions. [2020-04-18 10:46:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 346 transitions. [2020-04-18 10:46:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,219 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:59,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,220 INFO L82 PathProgramCache]: Analyzing trace with hash -229703923, now seen corresponding path program 4 times [2020-04-18 10:46:59,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299994435] [2020-04-18 10:46:59,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,309 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 10:46:59,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299994435] [2020-04-18 10:46:59,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:59,311 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,314 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 10:46:59,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,338 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:59,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:46:59,339 INFO L87 Difference]: Start difference. First operand 152 states and 346 transitions. Second operand 4 states. [2020-04-18 10:46:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,371 INFO L93 Difference]: Finished difference Result 202 states and 426 transitions. [2020-04-18 10:46:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 426 transitions. [2020-04-18 10:46:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,372 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:46:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1757560941, now seen corresponding path program 5 times [2020-04-18 10:46:59,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346662597] [2020-04-18 10:46:59,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,467 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 10:46:59,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346662597] [2020-04-18 10:46:59,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:59,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 10:46:59,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,482 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:46:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:46:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:46:59,483 INFO L87 Difference]: Start difference. First operand 202 states and 426 transitions. Second operand 5 states. [2020-04-18 10:46:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,529 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 10:46:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 10:46:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:46:59,530 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:46:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 6 times [2020-04-18 10:46:59,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294381545] [2020-04-18 10:46:59,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,638 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 10:46:59,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294381545] [2020-04-18 10:46:59,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:46:59,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 10:46:59,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,654 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:46:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:46:59,655 INFO L87 Difference]: Start difference. First operand 212 states and 434 transitions. Second operand 6 states. [2020-04-18 10:46:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,707 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 10:46:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 10:46:59,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:46:59,708 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [273381883] [2020-04-18 10:46:59,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:46:59,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:46:59,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [273381883] [2020-04-18 10:46:59,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:46:59,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:46:59,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:46:59,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:46:59,710 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-04-18 10:46:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,848 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 10:46:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 10:46:59,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 10:46:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:46:59,849 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:46:59,849 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 10:46:59,850 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:46:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 10:46:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 10:46:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 10:46:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-18 10:46:59,852 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-18 10:46:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:46:59,852 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-18 10:46:59,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:46:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-18 10:46:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:59,853 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:46:59,853 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:46:59,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:46:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-18 10:46:59,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:46:59,854 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [751252422] [2020-04-18 10:46:59,855 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,858 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 504 transitions. [2020-04-18 10:46:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 10:46:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:59,860 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:46:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash -32739391, now seen corresponding path program 2 times [2020-04-18 10:46:59,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672957494] [2020-04-18 10:46:59,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,889 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 10:46:59,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672957494] [2020-04-18 10:46:59,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:46:59,891 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,892 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,896 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 62 transitions. [2020-04-18 10:46:59,896 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:46:59,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:46:59,904 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 10:46:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,921 INFO L93 Difference]: Finished difference Result 288 states and 767 transitions. [2020-04-18 10:46:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 767 transitions. [2020-04-18 10:46:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:59,922 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:46:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1687862207, now seen corresponding path program 3 times [2020-04-18 10:46:59,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631521735] [2020-04-18 10:46:59,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,953 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 10:46:59,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631521735] [2020-04-18 10:46:59,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:59,954 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 43 transitions. [2020-04-18 10:46:59,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:46:59,964 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:46:59,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:46:59,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:46:59,965 INFO L87 Difference]: Start difference. First operand 288 states and 767 transitions. Second operand 3 states. [2020-04-18 10:46:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:46:59,969 INFO L93 Difference]: Finished difference Result 342 states and 875 transitions. [2020-04-18 10:46:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 875 transitions. [2020-04-18 10:46:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:46:59,970 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:46:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:46:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1702197797, now seen corresponding path program 4 times [2020-04-18 10:46:59,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:46:59,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11895383] [2020-04-18 10:46:59,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:46:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:46:59,993 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 10:46:59,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11895383] [2020-04-18 10:46:59,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:46:59,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:46:59,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:46:59,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:46:59,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 10:46:59,998 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,009 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:47:00,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:00,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:47:00,010 INFO L87 Difference]: Start difference. First operand 342 states and 875 transitions. Second operand 3 states. [2020-04-18 10:47:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,018 INFO L93 Difference]: Finished difference Result 478 states and 1169 transitions. [2020-04-18 10:47:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1169 transitions. [2020-04-18 10:47:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:00,020 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:47:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1702133057, now seen corresponding path program 5 times [2020-04-18 10:47:00,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:00,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241649076] [2020-04-18 10:47:00,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:00,102 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 10:47:00,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241649076] [2020-04-18 10:47:00,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:00,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:00,104 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:00,105 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:00,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 10:47:00,108 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,129 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:47:00,130 INFO L87 Difference]: Start difference. First operand 478 states and 1169 transitions. Second operand 4 states. [2020-04-18 10:47:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,168 INFO L93 Difference]: Finished difference Result 682 states and 1554 transitions. [2020-04-18 10:47:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1554 transitions. [2020-04-18 10:47:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:00,170 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:47:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:00,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1093921823, now seen corresponding path program 6 times [2020-04-18 10:47:00,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:00,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597563699] [2020-04-18 10:47:00,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:00,221 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 10:47:00,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597563699] [2020-04-18 10:47:00,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:00,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:47:00,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:00,223 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:00,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 10:47:00,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,238 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:47:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:47:00,239 INFO L87 Difference]: Start difference. First operand 682 states and 1554 transitions. Second operand 5 states. [2020-04-18 10:47:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,310 INFO L93 Difference]: Finished difference Result 748 states and 1636 transitions. [2020-04-18 10:47:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1636 transitions. [2020-04-18 10:47:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:00,313 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:47:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1260155603, now seen corresponding path program 7 times [2020-04-18 10:47:00,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:00,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861807676] [2020-04-18 10:47:00,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:00,409 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 10:47:00,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861807676] [2020-04-18 10:47:00,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:00,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:47:00,411 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:00,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:00,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 10:47:00,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:00,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:47:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:47:00,432 INFO L87 Difference]: Start difference. First operand 748 states and 1636 transitions. Second operand 6 states. [2020-04-18 10:47:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,521 INFO L93 Difference]: Finished difference Result 756 states and 1640 transitions. [2020-04-18 10:47:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1640 transitions. [2020-04-18 10:47:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:00,524 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:47:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:00,524 INFO L82 PathProgramCache]: Analyzing trace with hash 722630491, now seen corresponding path program 8 times [2020-04-18 10:47:00,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:00,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703242941] [2020-04-18 10:47:00,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:00,549 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 10:47:00,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703242941] [2020-04-18 10:47:00,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:00,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:00,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:00,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:00,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 64 transitions. [2020-04-18 10:47:00,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,624 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:47:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:47:00,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:47:00,624 INFO L87 Difference]: Start difference. First operand 756 states and 1640 transitions. Second operand 6 states. [2020-04-18 10:47:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,688 INFO L93 Difference]: Finished difference Result 936 states and 1994 transitions. [2020-04-18 10:47:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1994 transitions. [2020-04-18 10:47:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:00,691 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 10:47:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash 942358043, now seen corresponding path program 9 times [2020-04-18 10:47:00,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:00,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821505855] [2020-04-18 10:47:00,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:00,722 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 10:47:00,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821505855] [2020-04-18 10:47:00,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:00,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:00,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:00,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:00,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 10:47:00,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:00,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:47:00,794 INFO L87 Difference]: Start difference. First operand 936 states and 1994 transitions. Second operand 5 states. [2020-04-18 10:47:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:00,823 INFO L93 Difference]: Finished difference Result 1198 states and 2503 transitions. [2020-04-18 10:47:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2503 transitions. [2020-04-18 10:47:00,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:00,827 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [751252422] [2020-04-18 10:47:00,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:00,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:47:00,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [751252422] [2020-04-18 10:47:00,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 10:47:00,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:00,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 10:47:00,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:47:00,828 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 16 states. [2020-04-18 10:47:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:01,077 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 10:47:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:47:01,078 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-04-18 10:47:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:01,078 INFO L225 Difference]: With dead ends: 28 [2020-04-18 10:47:01,078 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:47:01,079 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 10:47:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:47:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:47:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:47:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:47:01,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 10:47:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:01,080 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:47:01,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 10:47:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:47:01,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:01,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:47:01 BasicIcfg [2020-04-18 10:47:01,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:47:01,086 INFO L168 Benchmark]: Toolchain (without parser) took 7646.30 ms. Allocated memory was 141.0 MB in the beginning and 295.7 MB in the end (delta: 154.7 MB). Free memory was 103.9 MB in the beginning and 148.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,087 INFO L168 Benchmark]: CDTParser took 1.47 ms. Allocated memory is still 141.0 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.66 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 162.6 MB in the end (delta: -60.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.39 ms. Allocated memory is still 206.0 MB. Free memory was 162.6 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,088 INFO L168 Benchmark]: Boogie Preprocessor took 26.43 ms. Allocated memory is still 206.0 MB. Free memory was 160.7 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,089 INFO L168 Benchmark]: RCFGBuilder took 435.90 ms. Allocated memory is still 206.0 MB. Free memory was 158.8 MB in the beginning and 137.6 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,089 INFO L168 Benchmark]: TraceAbstraction took 6357.62 ms. Allocated memory was 206.0 MB in the beginning and 295.7 MB in the end (delta: 89.7 MB). Free memory was 137.0 MB in the beginning and 148.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:01,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47 ms. Allocated memory is still 141.0 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.66 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 162.6 MB in the end (delta: -60.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.39 ms. Allocated memory is still 206.0 MB. Free memory was 162.6 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.43 ms. Allocated memory is still 206.0 MB. Free memory was 160.7 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.90 ms. Allocated memory is still 206.0 MB. Free memory was 158.8 MB in the beginning and 137.6 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6357.62 ms. Allocated memory was 206.0 MB in the beginning and 295.7 MB in the end (delta: 89.7 MB). Free memory was 137.0 MB in the beginning and 148.6 MB in the end (delta: -11.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 123 SDtfs, 184 SDslu, 263 SDs, 0 SdLazy, 301 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 458 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 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...