/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:40:32,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:40:32,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:40:32,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:40:32,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:40:32,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:40:32,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:40:32,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:40:32,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:40:32,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:40:32,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:40:32,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:40:32,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:40:32,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:40:32,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:40:32,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:40:32,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:40:32,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:40:32,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:40:32,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:40:32,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:40:32,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:40:32,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:40:32,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:40:32,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:40:32,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:40:32,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:40:32,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:40:32,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:40:32,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:40:32,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:40:32,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:40:32,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:40:32,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:40:32,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:40:32,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:40:32,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:40:32,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:40:32,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:40:32,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:40:32,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:40:32,148 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 10:40:32,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:40:32,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:40:32,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:40:32,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:40:32,171 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:40:32,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:40:32,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:40:32,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:40:32,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:40:32,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:40:32,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:40:32,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:40:32,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:40:32,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:40:32,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:40:32,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:40:32,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:40:32,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:40:32,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:40:32,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:40:32,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:40:32,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:40:32,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:40:32,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:40:32,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:40:32,175 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:40:32,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:40:32,175 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:40:32,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:40:32,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:40:32,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:40:32,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:40:32,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:40:32,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:40:32,459 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:40:32,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 10:40:32,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f0eb04a/db9dda85681b478f9af873b73d6f3068/FLAG14d8935c7 [2020-04-18 10:40:33,090 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:40:33,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 10:40:33,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f0eb04a/db9dda85681b478f9af873b73d6f3068/FLAG14d8935c7 [2020-04-18 10:40:33,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f0eb04a/db9dda85681b478f9af873b73d6f3068 [2020-04-18 10:40:33,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:40:33,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:40:33,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:40:33,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:40:33,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:40:33,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:40:33" (1/1) ... [2020-04-18 10:40:33,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b636dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:33, skipping insertion in model container [2020-04-18 10:40:33,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:40:33" (1/1) ... [2020-04-18 10:40:33,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:40:33,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:40:33,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:40:33,980 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:40:34,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:40:34,130 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:40:34,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34 WrapperNode [2020-04-18 10:40:34,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:40:34,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:40:34,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:40:34,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:40:34,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:40:34,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:40:34,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:40:34,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:40:34,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (1/1) ... [2020-04-18 10:40:34,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:40:34,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:40:34,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:40:34,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:40:34,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (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 10:40:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:40:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:40:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:40:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:40:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:40:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:40:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:40:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:40:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:40:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:40:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:40:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:40:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:40:34,285 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 10:40:34,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:40:34,677 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:40:34,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:40:34 BoogieIcfgContainer [2020-04-18 10:40:34,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:40:34,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:40:34,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:40:34,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:40:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:40:33" (1/3) ... [2020-04-18 10:40:34,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f065a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:40:34, skipping insertion in model container [2020-04-18 10:40:34,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:40:34" (2/3) ... [2020-04-18 10:40:34,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f065a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:40:34, skipping insertion in model container [2020-04-18 10:40:34,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:40:34" (3/3) ... [2020-04-18 10:40:34,690 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-04-18 10:40:34,700 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:40:34,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:40:34,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:40:34,709 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:40:34,732 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,733 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,733 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,733 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,734 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,734 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,735 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,735 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,735 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,735 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,736 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,736 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,737 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,737 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,737 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,737 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,738 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,738 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,742 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,742 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,743 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,743 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,749 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,750 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,750 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,750 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,753 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,753 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:40:34,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:40:34,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:40:34,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:40:34,790 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:40:34,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:40:34,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:40:34,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:40:34,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:40:34,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:40:34,806 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 10:40:34,808 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:40:34,850 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:40:34,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:40:34,855 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:40:34,858 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:40:34,877 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:40:34,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:40:34,878 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:40:34,880 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:40:34,882 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:40:36,648 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 10:40:36,649 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 10:40:36,652 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:40:36,678 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:40:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:40:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:40:36,688 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:36,689 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:36,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 10:40:36,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:36,703 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1916051956] [2020-04-18 10:40:36,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:36,730 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:40:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:40:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:40:36,733 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 2 times [2020-04-18 10:40:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:36,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292451265] [2020-04-18 10:40:36,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:36,953 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 10:40:36,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292451265] [2020-04-18 10:40:36,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:36,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:40:36,956 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:36,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:36,961 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:40:36,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:36,981 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:36,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:36,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:36,988 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:40:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:36,993 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:40:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:40:36,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:36,995 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1916051956] [2020-04-18 10:40:36,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:36,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:40:36,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1916051956] [2020-04-18 10:40:36,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:40:36,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,003 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:40:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,062 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 10:40:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:40:37,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:40:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:37,091 INFO L225 Difference]: With dead ends: 290 [2020-04-18 10:40:37,091 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 10:40:37,096 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 10:40:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 10:40:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 10:40:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 10:40:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 10:40:37,163 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 10:40:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:37,165 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 10:40:37,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:40:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 10:40:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:40:37,167 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:37,167 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:37,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash -838449604, now seen corresponding path program 1 times [2020-04-18 10:40:37,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:37,168 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1652182068] [2020-04-18 10:40:37,169 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,169 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 10:40:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:40:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:40:37,170 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash -838449604, now seen corresponding path program 2 times [2020-04-18 10:40:37,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564917236] [2020-04-18 10:40:37,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,246 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 10:40:37,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564917236] [2020-04-18 10:40:37,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:40:37,248 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,248 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,250 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 10:40:37,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,255 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:37,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,256 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 10:40:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,256 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 10:40:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 10:40:37,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:37,257 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1652182068] [2020-04-18 10:40:37,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:37,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:40:37,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1652182068] [2020-04-18 10:40:37,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:40:37,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:37,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,260 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 10:40:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,266 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-04-18 10:40:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:40:37,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 10:40:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:37,269 INFO L225 Difference]: With dead ends: 198 [2020-04-18 10:40:37,269 INFO L226 Difference]: Without dead ends: 198 [2020-04-18 10:40:37,271 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 10:40:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-18 10:40:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-18 10:40:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-18 10:40:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-04-18 10:40:37,286 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-04-18 10:40:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:37,287 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-04-18 10:40:37,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:40:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-04-18 10:40:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:40:37,289 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:37,289 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:37,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-18 10:40:37,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:37,290 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1396151369] [2020-04-18 10:40:37,290 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,294 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:40:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:40:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:40:37,295 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1703758399, now seen corresponding path program 2 times [2020-04-18 10:40:37,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435290761] [2020-04-18 10:40:37,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,372 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 10:40:37,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435290761] [2020-04-18 10:40:37,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:37,373 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,374 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 10:40:37,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,388 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 10:40:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,390 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-04-18 10:40:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-04-18 10:40:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:40:37,391 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 3 times [2020-04-18 10:40:37,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821563051] [2020-04-18 10:40:37,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,447 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 10:40:37,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821563051] [2020-04-18 10:40:37,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:37,448 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,455 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:40:37,456 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,473 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:40:37,474 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2020-04-18 10:40:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,509 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:40:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:40:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:40:37,512 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:40:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 4 times [2020-04-18 10:40:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401324660] [2020-04-18 10:40:37,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:40:37,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401324660] [2020-04-18 10:40:37,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:37,593 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,596 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 10:40:37,596 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,604 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:37,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:37,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:40:37,605 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-04-18 10:40:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,620 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:40:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:40:37,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:37,621 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1396151369] [2020-04-18 10:40:37,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:37,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:40:37,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1396151369] [2020-04-18 10:40:37,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:40:37,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:40:37,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:40:37,622 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 6 states. [2020-04-18 10:40:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,699 INFO L93 Difference]: Finished difference Result 374 states and 938 transitions. [2020-04-18 10:40:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 10:40:37,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:40:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:37,702 INFO L225 Difference]: With dead ends: 374 [2020-04-18 10:40:37,702 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 10:40:37,702 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:40:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 10:40:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-04-18 10:40:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 10:40:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-18 10:40:37,735 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-18 10:40:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:37,736 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-18 10:40:37,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:40:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 10:40:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:40:37,737 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:37,738 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:37,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-18 10:40:37,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:37,739 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [811921847] [2020-04-18 10:40:37,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,741 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 10:40:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 10:40:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:40:37,743 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1787777494, now seen corresponding path program 2 times [2020-04-18 10:40:37,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857213583] [2020-04-18 10:40:37,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,798 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 10:40:37,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857213583] [2020-04-18 10:40:37,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:37,799 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,801 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:40:37,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:37,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,811 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-04-18 10:40:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,821 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 10:40:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 10:40:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:40:37,822 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1243348216, now seen corresponding path program 3 times [2020-04-18 10:40:37,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729555272] [2020-04-18 10:40:37,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,864 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 10:40:37,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729555272] [2020-04-18 10:40:37,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:37,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:40:37,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,873 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:37,874 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 3 states. [2020-04-18 10:40:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,879 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 10:40:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 10:40:37,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:37,880 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [811921847] [2020-04-18 10:40:37,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:37,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:40:37,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [811921847] [2020-04-18 10:40:37,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:40:37,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:37,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:37,882 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 4 states. [2020-04-18 10:40:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,907 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-18 10:40:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:40:37,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 10:40:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:37,910 INFO L225 Difference]: With dead ends: 174 [2020-04-18 10:40:37,910 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 10:40:37,910 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 10:40:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 10:40:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 10:40:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 10:40:37,923 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 10:40:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:37,924 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 10:40:37,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:40:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 10:40:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:40:37,925 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:37,925 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:37,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-18 10:40:37,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:37,926 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [708629255] [2020-04-18 10:40:37,926 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,928 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 10:40:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 10:40:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:40:37,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1034198235, now seen corresponding path program 2 times [2020-04-18 10:40:37,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039976217] [2020-04-18 10:40:37,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:37,963 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 10:40:37,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039976217] [2020-04-18 10:40:37,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:37,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:37,963 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:37,964 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:37,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2020-04-18 10:40:37,969 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:37,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:37,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:37,973 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 10:40:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:37,986 INFO L93 Difference]: Finished difference Result 89 states and 190 transitions. [2020-04-18 10:40:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 190 transitions. [2020-04-18 10:40:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:40:37,987 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash -228783101, now seen corresponding path program 3 times [2020-04-18 10:40:37,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:37,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139950831] [2020-04-18 10:40:37,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,025 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 10:40:38,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139950831] [2020-04-18 10:40:38,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:38,026 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,027 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 10:40:38,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,045 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:38,045 INFO L87 Difference]: Start difference. First operand 89 states and 190 transitions. Second operand 3 states. [2020-04-18 10:40:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,051 INFO L93 Difference]: Finished difference Result 98 states and 198 transitions. [2020-04-18 10:40:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 198 transitions. [2020-04-18 10:40:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:40:38,052 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:40:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash -229729661, now seen corresponding path program 4 times [2020-04-18 10:40:38,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735867721] [2020-04-18 10:40:38,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,112 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 10:40:38,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735867721] [2020-04-18 10:40:38,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:38,113 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 10:40:38,120 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,135 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:40:38,135 INFO L87 Difference]: Start difference. First operand 98 states and 198 transitions. Second operand 4 states. [2020-04-18 10:40:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,158 INFO L93 Difference]: Finished difference Result 114 states and 213 transitions. [2020-04-18 10:40:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 213 transitions. [2020-04-18 10:40:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:40:38,159 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:40:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,159 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 5 times [2020-04-18 10:40:38,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47939808] [2020-04-18 10:40:38,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,217 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 10:40:38,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47939808] [2020-04-18 10:40:38,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:38,218 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,219 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,224 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-04-18 10:40:38,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,248 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:38,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:38,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:40:38,249 INFO L87 Difference]: Start difference. First operand 114 states and 213 transitions. Second operand 4 states. [2020-04-18 10:40:38,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,262 INFO L93 Difference]: Finished difference Result 114 states and 213 transitions. [2020-04-18 10:40:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 213 transitions. [2020-04-18 10:40:38,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:38,263 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [708629255] [2020-04-18 10:40:38,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:38,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:40:38,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [708629255] [2020-04-18 10:40:38,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:40:38,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:38,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:40:38,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:40:38,266 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 8 states. [2020-04-18 10:40:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,519 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 10:40:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:40:38,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 10:40:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:38,521 INFO L225 Difference]: With dead ends: 85 [2020-04-18 10:40:38,521 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 10:40:38,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:40:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 10:40:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 10:40:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 10:40:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 10:40:38,525 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 10:40:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:38,525 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 10:40:38,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:40:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 10:40:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:40:38,526 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:38,526 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:38,526 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 10:40:38,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:38,527 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [184225003] [2020-04-18 10:40:38,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 10:40:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 10:40:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:40:38,531 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash 246315656, now seen corresponding path program 2 times [2020-04-18 10:40:38,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641452731] [2020-04-18 10:40:38,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,562 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 10:40:38,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641452731] [2020-04-18 10:40:38,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:38,563 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,564 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 10:40:38,567 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,572 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:38,572 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 10:40:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,583 INFO L93 Difference]: Finished difference Result 128 states and 289 transitions. [2020-04-18 10:40:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 289 transitions. [2020-04-18 10:40:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:40:38,584 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1497669128, now seen corresponding path program 3 times [2020-04-18 10:40:38,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087421066] [2020-04-18 10:40:38,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,615 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 10:40:38,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087421066] [2020-04-18 10:40:38,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:38,616 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 53 transitions. [2020-04-18 10:40:38,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,625 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:38,626 INFO L87 Difference]: Start difference. First operand 128 states and 289 transitions. Second operand 3 states. [2020-04-18 10:40:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,629 INFO L93 Difference]: Finished difference Result 142 states and 304 transitions. [2020-04-18 10:40:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 304 transitions. [2020-04-18 10:40:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:40:38,630 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:40:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1468315298, now seen corresponding path program 4 times [2020-04-18 10:40:38,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454784658] [2020-04-18 10:40:38,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,676 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 10:40:38,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454784658] [2020-04-18 10:40:38,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:38,677 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,678 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 84 transitions. [2020-04-18 10:40:38,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,695 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:38,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:40:38,696 INFO L87 Difference]: Start difference. First operand 142 states and 304 transitions. Second operand 4 states. [2020-04-18 10:40:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,718 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2020-04-18 10:40:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 334 transitions. [2020-04-18 10:40:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:40:38,719 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:40:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 5 times [2020-04-18 10:40:38,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:38,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489476696] [2020-04-18 10:40:38,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:38,778 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 10:40:38,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489476696] [2020-04-18 10:40:38,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:38,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:38,779 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:38,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:38,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 10:40:38,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:38,814 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:40:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:40:38,815 INFO L87 Difference]: Start difference. First operand 168 states and 334 transitions. Second operand 5 states. [2020-04-18 10:40:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:38,849 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2020-04-18 10:40:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 334 transitions. [2020-04-18 10:40:38,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:38,850 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [184225003] [2020-04-18 10:40:38,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:38,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:40:38,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [184225003] [2020-04-18 10:40:38,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:40:38,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:38,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:40:38,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:40:38,852 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 9 states. [2020-04-18 10:40:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,094 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 10:40:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:40:39,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 10:40:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:39,096 INFO L225 Difference]: With dead ends: 62 [2020-04-18 10:40:39,096 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 10:40:39,097 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-04-18 10:40:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 10:40:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 10:40:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 10:40:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 10:40:39,100 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 10:40:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:39,100 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 10:40:39,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:40:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 10:40:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,101 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:39,101 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:39,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 10:40:39,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:39,102 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [602611763] [2020-04-18 10:40:39,102 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 10:40:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 10:40:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,106 INFO L82 PathProgramCache]: Analyzing trace with hash -954149052, now seen corresponding path program 2 times [2020-04-18 10:40:39,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338922527] [2020-04-18 10:40:39,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,133 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 10:40:39,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338922527] [2020-04-18 10:40:39,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:39,134 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,139 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 60 transitions. [2020-04-18 10:40:39,139 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,143 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:39,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:39,144 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 10:40:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,152 INFO L93 Difference]: Finished difference Result 162 states and 380 transitions. [2020-04-18 10:40:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 380 transitions. [2020-04-18 10:40:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,153 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash -816897084, now seen corresponding path program 3 times [2020-04-18 10:40:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282822056] [2020-04-18 10:40:39,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:40:39,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282822056] [2020-04-18 10:40:39,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:39,187 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,188 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-04-18 10:40:39,192 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:39,197 INFO L87 Difference]: Start difference. First operand 162 states and 380 transitions. Second operand 3 states. [2020-04-18 10:40:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,200 INFO L93 Difference]: Finished difference Result 190 states and 424 transitions. [2020-04-18 10:40:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 424 transitions. [2020-04-18 10:40:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,201 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:40:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1726865814, now seen corresponding path program 4 times [2020-04-18 10:40:39,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86518870] [2020-04-18 10:40:39,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,228 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 10:40:39,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86518870] [2020-04-18 10:40:39,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:39,229 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,234 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 87 transitions. [2020-04-18 10:40:39,234 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,247 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:39,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:39,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:40:39,248 INFO L87 Difference]: Start difference. First operand 190 states and 424 transitions. Second operand 4 states. [2020-04-18 10:40:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,266 INFO L93 Difference]: Finished difference Result 242 states and 510 transitions. [2020-04-18 10:40:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 510 transitions. [2020-04-18 10:40:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,267 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:40:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1553257578, now seen corresponding path program 5 times [2020-04-18 10:40:39,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737896032] [2020-04-18 10:40:39,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,321 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 10:40:39,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737896032] [2020-04-18 10:40:39,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:39,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,328 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2020-04-18 10:40:39,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,354 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:39,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:40:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:40:39,355 INFO L87 Difference]: Start difference. First operand 242 states and 510 transitions. Second operand 5 states. [2020-04-18 10:40:39,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,413 INFO L93 Difference]: Finished difference Result 252 states and 517 transitions. [2020-04-18 10:40:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 517 transitions. [2020-04-18 10:40:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:40:39,415 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:40:39,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 6 times [2020-04-18 10:40:39,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72983646] [2020-04-18 10:40:39,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,460 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 10:40:39,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72983646] [2020-04-18 10:40:39,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:39,462 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-04-18 10:40:39,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:40:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:40:39,479 INFO L87 Difference]: Start difference. First operand 252 states and 517 transitions. Second operand 6 states. [2020-04-18 10:40:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,519 INFO L93 Difference]: Finished difference Result 252 states and 517 transitions. [2020-04-18 10:40:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 517 transitions. [2020-04-18 10:40:39,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:39,520 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [602611763] [2020-04-18 10:40:39,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:39,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:40:39,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [602611763] [2020-04-18 10:40:39,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:40:39,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:39,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:40:39,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:40:39,521 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 10 states. [2020-04-18 10:40:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,773 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 10:40:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:40:39,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 10:40:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:39,774 INFO L225 Difference]: With dead ends: 44 [2020-04-18 10:40:39,774 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 10:40:39,774 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-04-18 10:40:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 10:40:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 10:40:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 10:40:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 10:40:39,776 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 10:40:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:39,777 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 10:40:39,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:40:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 10:40:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:39,777 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:40:39,778 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:40:39,778 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:40:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 10:40:39,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:40:39,779 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [468107145] [2020-04-18 10:40:39,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,782 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:40:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:40:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:39,785 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:40:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,786 INFO L82 PathProgramCache]: Analyzing trace with hash 465346242, now seen corresponding path program 2 times [2020-04-18 10:40:39,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780400874] [2020-04-18 10:40:39,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,812 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 10:40:39,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780400874] [2020-04-18 10:40:39,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:39,814 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,815 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 100 transitions. [2020-04-18 10:40:39,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,828 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:40:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:39,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:40:39,829 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:40:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,841 INFO L93 Difference]: Finished difference Result 350 states and 932 transitions. [2020-04-18 10:40:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 932 transitions. [2020-04-18 10:40:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:39,843 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:40:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash -252067140, now seen corresponding path program 3 times [2020-04-18 10:40:39,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141445469] [2020-04-18 10:40:39,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,868 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 10:40:39,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141445469] [2020-04-18 10:40:39,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:40:39,869 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,875 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 91 transitions. [2020-04-18 10:40:39,875 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:39,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:39,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:40:39,884 INFO L87 Difference]: Start difference. First operand 350 states and 932 transitions. Second operand 3 states. [2020-04-18 10:40:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,889 INFO L93 Difference]: Finished difference Result 410 states and 1044 transitions. [2020-04-18 10:40:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1044 transitions. [2020-04-18 10:40:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:39,891 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:40:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,891 INFO L82 PathProgramCache]: Analyzing trace with hash -306447960, now seen corresponding path program 4 times [2020-04-18 10:40:39,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557930670] [2020-04-18 10:40:39,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,917 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 10:40:39,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557930670] [2020-04-18 10:40:39,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:39,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,919 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,925 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 112 transitions. [2020-04-18 10:40:39,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:40:39,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:40:39,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:40:39,939 INFO L87 Difference]: Start difference. First operand 410 states and 1044 transitions. Second operand 4 states. [2020-04-18 10:40:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:39,959 INFO L93 Difference]: Finished difference Result 558 states and 1382 transitions. [2020-04-18 10:40:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1382 transitions. [2020-04-18 10:40:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:39,961 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:40:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:39,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1970250456, now seen corresponding path program 5 times [2020-04-18 10:40:39,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:39,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880054299] [2020-04-18 10:40:39,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:39,980 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 10:40:39,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880054299] [2020-04-18 10:40:39,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:39,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:40:39,981 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:39,982 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:39,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 80 transitions. [2020-04-18 10:40:39,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:39,996 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:40:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:40:39,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:40:39,997 INFO L87 Difference]: Start difference. First operand 558 states and 1382 transitions. Second operand 3 states. [2020-04-18 10:40:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:40,005 INFO L93 Difference]: Finished difference Result 866 states and 1998 transitions. [2020-04-18 10:40:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1998 transitions. [2020-04-18 10:40:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:40,007 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:40:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1968135636, now seen corresponding path program 6 times [2020-04-18 10:40:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:40,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355026151] [2020-04-18 10:40:40,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:40,050 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 10:40:40,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355026151] [2020-04-18 10:40:40,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:40,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:40:40,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:40,052 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:40,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 72 transitions. [2020-04-18 10:40:40,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:40,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:40:40,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:40:40,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:40:40,089 INFO L87 Difference]: Start difference. First operand 866 states and 1998 transitions. Second operand 5 states. [2020-04-18 10:40:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:40,178 INFO L93 Difference]: Finished difference Result 970 states and 2120 transitions. [2020-04-18 10:40:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2120 transitions. [2020-04-18 10:40:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:40:40,181 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:40:40,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:40:40,181 INFO L82 PathProgramCache]: Analyzing trace with hash 446231490, now seen corresponding path program 7 times [2020-04-18 10:40:40,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:40:40,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409262475] [2020-04-18 10:40:40,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:40:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:40:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:40:40,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409262475] [2020-04-18 10:40:40,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:40:40,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:40:40,231 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:40:40,232 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:40:40,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 70 transitions. [2020-04-18 10:40:40,236 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:40:40,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:40:40,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:40:40,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:40:40,250 INFO L87 Difference]: Start difference. First operand 970 states and 2120 transitions. Second operand 6 states. [2020-04-18 10:40:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:40,343 INFO L93 Difference]: Finished difference Result 982 states and 2126 transitions. [2020-04-18 10:40:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 2126 transitions. [2020-04-18 10:40:40,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:40,347 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [468107145] [2020-04-18 10:40:40,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:40:40,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:40:40,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [468107145] [2020-04-18 10:40:40,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:40:40,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:40:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:40:40,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:40:40,348 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 11 states. [2020-04-18 10:40:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:40:40,579 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 10:40:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:40:40,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-04-18 10:40:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:40:40,580 INFO L225 Difference]: With dead ends: 37 [2020-04-18 10:40:40,580 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:40:40,581 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2020-04-18 10:40:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:40:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:40:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:40:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:40:40,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:40:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:40:40,582 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:40:40,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:40:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:40:40,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:40:40,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:40:40 BasicIcfg [2020-04-18 10:40:40,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:40:40,589 INFO L168 Benchmark]: Toolchain (without parser) took 7220.69 ms. Allocated memory was 136.8 MB in the beginning and 292.0 MB in the end (delta: 155.2 MB). Free memory was 100.4 MB in the beginning and 98.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 157.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,589 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.72 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.4 MB in the beginning and 157.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,591 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 ms. Allocated memory is still 200.8 MB. Free memory was 155.6 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,591 INFO L168 Benchmark]: RCFGBuilder took 476.77 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 131.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,592 INFO L168 Benchmark]: TraceAbstraction took 5903.32 ms. Allocated memory was 200.8 MB in the beginning and 292.0 MB in the end (delta: 91.2 MB). Free memory was 131.8 MB in the beginning and 98.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. [2020-04-18 10:40:40,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.72 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.4 MB in the beginning and 157.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 200.8 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.49 ms. Allocated memory is still 200.8 MB. Free memory was 155.6 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.77 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 131.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5903.32 ms. Allocated memory was 200.8 MB in the beginning and 292.0 MB in the end (delta: 91.2 MB). Free memory was 131.8 MB in the beginning and 98.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 148 SDtfs, 152 SDslu, 345 SDs, 0 SdLazy, 450 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 473 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...