/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:40:31,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:40:31,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:40:31,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:40:31,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:40:31,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:40:31,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:40:31,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:40:31,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:40:31,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:40:31,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:40:31,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:40:31,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:40:31,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:40:31,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:40:31,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:40:31,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:40:31,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:40:31,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:40:31,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:40:31,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:40:31,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:40:31,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:40:31,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:40:31,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:40:31,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:40:31,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:40:31,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:40:31,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:40:31,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:40:31,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:40:31,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:40:31,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:40:31,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:40:31,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:40:31,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:40:31,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:40:31,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:40:31,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:40:31,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:40:31,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:40:31,369 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-NoLbe-McrStrategy.epf [2020-04-18 19:40:31,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:40:31,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:40:31,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:40:31,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:40:31,386 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:40:31,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:40:31,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:40:31,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:40:31,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:40:31,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:40:31,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:40:31,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:40:31,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:40:31,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:40:31,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:40:31,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:40:31,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:40:31,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:40:31,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:40:31,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:40:31,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:40:31,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:40:31,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:40:31,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:40:31,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:40:31,391 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:40:31,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:40:31,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:40:31,391 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:40:31,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:40:31,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:40:31,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:40:31,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:40:31,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:40:31,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:40:31,734 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:40:31,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 19:40:31,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed025e98/470d575053db466c81d6baeb476f46ed/FLAG17dc23851 [2020-04-18 19:40:32,417 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:40:32,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 19:40:32,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed025e98/470d575053db466c81d6baeb476f46ed/FLAG17dc23851 [2020-04-18 19:40:32,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed025e98/470d575053db466c81d6baeb476f46ed [2020-04-18 19:40:32,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:40:32,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:40:32,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:40:32,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:40:32,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:40:32,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:32" (1/1) ... [2020-04-18 19:40:32,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3abb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:32, skipping insertion in model container [2020-04-18 19:40:32,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:32" (1/1) ... [2020-04-18 19:40:32,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:40:32,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:40:33,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:40:33,375 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:40:33,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:40:33,508 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:40:33,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33 WrapperNode [2020-04-18 19:40:33,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:40:33,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:40:33,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:40:33,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:40:33,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:40:33,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:40:33,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:40:33,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:40:33,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (1/1) ... [2020-04-18 19:40:33,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:40:33,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:40:33,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:40:33,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:40:33,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (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 19:40:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:40:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:40:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:40:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:40:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:40:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:40:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:40:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:40:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:40:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:40:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:40:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:40:33,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:40:33,660 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 19:40:34,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:40:34,063 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:40:34,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:34 BoogieIcfgContainer [2020-04-18 19:40:34,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:40:34,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:40:34,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:40:34,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:40:34,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:40:32" (1/3) ... [2020-04-18 19:40:34,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d1468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:34, skipping insertion in model container [2020-04-18 19:40:34,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:33" (2/3) ... [2020-04-18 19:40:34,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d1468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:34, skipping insertion in model container [2020-04-18 19:40:34,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:34" (3/3) ... [2020-04-18 19:40:34,077 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-04-18 19:40:34,088 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:40:34,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:40:34,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:40:34,097 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:40:34,122 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,122 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,122 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,123 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,123 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,124 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,124 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,124 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,125 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,125 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,125 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,126 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,126 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,126 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,127 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,127 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,127 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,127 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,131 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,132 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,132 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,132 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,138 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,138 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,139 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,139 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,142 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,142 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:40:34,164 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:40:34,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:40:34,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:40:34,182 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:40:34,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:40:34,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:40:34,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:40:34,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:40:34,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:40:34,195 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:40:34,605 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7267 states. [2020-04-18 19:40:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states. [2020-04-18 19:40:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:40:34,641 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:34,642 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:34,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash -42514807, now seen corresponding path program 1 times [2020-04-18 19:40:34,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:34,657 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [824261381] [2020-04-18 19:40:34,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:34,694 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:40:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:40:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:40:34,698 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -42514807, now seen corresponding path program 2 times [2020-04-18 19:40:34,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:34,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784899343] [2020-04-18 19:40:34,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:35,328 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 19:40:35,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784899343] [2020-04-18 19:40:35,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:35,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:35,332 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:35,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:35,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:40:35,348 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:35,412 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:35,419 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:40:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:35,533 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:40:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:40:35,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:35,534 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [824261381] [2020-04-18 19:40:35,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:35,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:35,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [824261381] [2020-04-18 19:40:35,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:40:35,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:35,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:40:35,543 INFO L87 Difference]: Start difference. First operand 7267 states. Second operand 6 states. [2020-04-18 19:40:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:35,995 INFO L93 Difference]: Finished difference Result 15559 states and 53305 transitions. [2020-04-18 19:40:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:40:35,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:40:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:36,070 INFO L225 Difference]: With dead ends: 15559 [2020-04-18 19:40:36,070 INFO L226 Difference]: Without dead ends: 4777 [2020-04-18 19:40:36,076 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:40:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-04-18 19:40:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4057. [2020-04-18 19:40:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-04-18 19:40:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 13594 transitions. [2020-04-18 19:40:36,336 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 13594 transitions. Word has length 35 [2020-04-18 19:40:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:36,337 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 13594 transitions. [2020-04-18 19:40:36,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:40:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 13594 transitions. [2020-04-18 19:40:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:36,345 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:36,346 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:36,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:36,346 INFO L82 PathProgramCache]: Analyzing trace with hash 638524266, now seen corresponding path program 1 times [2020-04-18 19:40:36,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:36,347 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1364399058] [2020-04-18 19:40:36,348 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:36,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 85 transitions. [2020-04-18 19:40:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 19:40:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:36,352 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash 638524266, now seen corresponding path program 2 times [2020-04-18 19:40:36,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:36,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560722215] [2020-04-18 19:40:36,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:36,510 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 19:40:36,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560722215] [2020-04-18 19:40:36,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:36,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:36,512 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:36,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:36,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 61 transitions. [2020-04-18 19:40:36,521 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:36,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:36,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:36,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:36,585 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-04-18 19:40:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:36,776 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-04-18 19:40:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-04-18 19:40:36,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:36,777 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1364399058] [2020-04-18 19:40:36,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:36,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:36,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1364399058] [2020-04-18 19:40:36,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:36,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:40:36,780 INFO L87 Difference]: Start difference. First operand 4057 states and 13594 transitions. Second operand 7 states. [2020-04-18 19:40:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:37,145 INFO L93 Difference]: Finished difference Result 6543 states and 21535 transitions. [2020-04-18 19:40:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:40:37,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:40:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:37,190 INFO L225 Difference]: With dead ends: 6543 [2020-04-18 19:40:37,190 INFO L226 Difference]: Without dead ends: 4935 [2020-04-18 19:40:37,192 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:40:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2020-04-18 19:40:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4035. [2020-04-18 19:40:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-04-18 19:40:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 13455 transitions. [2020-04-18 19:40:37,343 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 13455 transitions. Word has length 37 [2020-04-18 19:40:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:37,343 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 13455 transitions. [2020-04-18 19:40:37,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 13455 transitions. [2020-04-18 19:40:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:37,352 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:37,352 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:37,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:37,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1941266888, now seen corresponding path program 1 times [2020-04-18 19:40:37,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:37,353 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2052005839] [2020-04-18 19:40:37,355 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:37,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 117 transitions. [2020-04-18 19:40:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 19:40:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:37,358 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash 300973254, now seen corresponding path program 2 times [2020-04-18 19:40:37,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:37,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048948068] [2020-04-18 19:40:37,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:37,592 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 19:40:37,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048948068] [2020-04-18 19:40:37,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:37,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:37,594 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:37,598 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:37,604 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 87 transitions. [2020-04-18 19:40:37,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:37,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:37,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:37,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:37,656 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 6 states. [2020-04-18 19:40:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:37,791 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2020-04-18 19:40:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2020-04-18 19:40:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:40:37,791 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1941266888, now seen corresponding path program 3 times [2020-04-18 19:40:37,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:37,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566433834] [2020-04-18 19:40:37,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:37,897 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 19:40:37,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566433834] [2020-04-18 19:40:37,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:37,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:37,899 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:37,902 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:37,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 93 transitions. [2020-04-18 19:40:37,909 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:37,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:37,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:40:37,927 INFO L87 Difference]: Start difference. First operand 84 states and 122 transitions. Second operand 6 states. [2020-04-18 19:40:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:37,993 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2020-04-18 19:40:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2020-04-18 19:40:37,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:37,994 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2052005839] [2020-04-18 19:40:37,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:37,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:37,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2052005839] [2020-04-18 19:40:37,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:37,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:37,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:37,996 INFO L87 Difference]: Start difference. First operand 4035 states and 13455 transitions. Second operand 7 states. [2020-04-18 19:40:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:38,159 INFO L93 Difference]: Finished difference Result 5619 states and 18429 transitions. [2020-04-18 19:40:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:38,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:40:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:38,233 INFO L225 Difference]: With dead ends: 5619 [2020-04-18 19:40:38,234 INFO L226 Difference]: Without dead ends: 4395 [2020-04-18 19:40:38,234 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2020-04-18 19:40:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 3675. [2020-04-18 19:40:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-04-18 19:40:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 12147 transitions. [2020-04-18 19:40:38,404 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 12147 transitions. Word has length 37 [2020-04-18 19:40:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:38,405 INFO L479 AbstractCegarLoop]: Abstraction has 3675 states and 12147 transitions. [2020-04-18 19:40:38,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 12147 transitions. [2020-04-18 19:40:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:38,416 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:38,416 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:38,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1831915989, now seen corresponding path program 1 times [2020-04-18 19:40:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:38,418 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [915682857] [2020-04-18 19:40:38,419 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:38,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:40:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:40:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:38,430 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1831915989, now seen corresponding path program 2 times [2020-04-18 19:40:38,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:38,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155486702] [2020-04-18 19:40:38,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:38,604 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 19:40:38,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155486702] [2020-04-18 19:40:38,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:38,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:38,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:38,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:38,621 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 143 transitions. [2020-04-18 19:40:38,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:38,668 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:38,669 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 7 states. [2020-04-18 19:40:38,822 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-04-18 19:40:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:38,853 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:40:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:40:38,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:38,854 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [915682857] [2020-04-18 19:40:38,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:38,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:38,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [915682857] [2020-04-18 19:40:38,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:38,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:40:38,856 INFO L87 Difference]: Start difference. First operand 3675 states and 12147 transitions. Second operand 7 states. [2020-04-18 19:40:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:39,067 INFO L93 Difference]: Finished difference Result 5035 states and 16395 transitions. [2020-04-18 19:40:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:39,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:40:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:39,089 INFO L225 Difference]: With dead ends: 5035 [2020-04-18 19:40:39,089 INFO L226 Difference]: Without dead ends: 4155 [2020-04-18 19:40:39,090 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2020-04-18 19:40:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 3379. [2020-04-18 19:40:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-04-18 19:40:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 11125 transitions. [2020-04-18 19:40:39,229 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 11125 transitions. Word has length 39 [2020-04-18 19:40:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:39,230 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 11125 transitions. [2020-04-18 19:40:39,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 11125 transitions. [2020-04-18 19:40:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:39,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:39,240 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:39,240 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:39,240 INFO L82 PathProgramCache]: Analyzing trace with hash -710180247, now seen corresponding path program 1 times [2020-04-18 19:40:39,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:39,241 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [733698926] [2020-04-18 19:40:39,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:39,245 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 319 transitions. [2020-04-18 19:40:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-04-18 19:40:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:39,247 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1944493415, now seen corresponding path program 2 times [2020-04-18 19:40:39,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:39,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374044422] [2020-04-18 19:40:39,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:39,374 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 19:40:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374044422] [2020-04-18 19:40:39,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:39,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:39,375 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:39,378 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:39,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 91 states and 153 transitions. [2020-04-18 19:40:39,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:39,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:40:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:39,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:39,436 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 7 states. [2020-04-18 19:40:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:39,549 INFO L93 Difference]: Finished difference Result 174 states and 346 transitions. [2020-04-18 19:40:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 346 transitions. [2020-04-18 19:40:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:40:39,550 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:39,551 INFO L82 PathProgramCache]: Analyzing trace with hash -710180247, now seen corresponding path program 3 times [2020-04-18 19:40:39,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:39,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101548093] [2020-04-18 19:40:39,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:39,695 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 19:40:39,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101548093] [2020-04-18 19:40:39,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:39,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:39,698 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:39,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:39,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 199 transitions. [2020-04-18 19:40:39,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:40,216 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:40:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:40:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:40:40,218 INFO L87 Difference]: Start difference. First operand 174 states and 346 transitions. Second operand 19 states. [2020-04-18 19:40:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:40,422 INFO L93 Difference]: Finished difference Result 174 states and 346 transitions. [2020-04-18 19:40:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 346 transitions. [2020-04-18 19:40:40,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:40,423 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [733698926] [2020-04-18 19:40:40,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:40,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:40:40,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [733698926] [2020-04-18 19:40:40,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:40:40,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:40,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:40:40,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:40,425 INFO L87 Difference]: Start difference. First operand 3379 states and 11125 transitions. Second operand 20 states. [2020-04-18 19:40:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:41,116 INFO L93 Difference]: Finished difference Result 7459 states and 23888 transitions. [2020-04-18 19:40:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:40:41,116 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2020-04-18 19:40:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:41,130 INFO L225 Difference]: With dead ends: 7459 [2020-04-18 19:40:41,130 INFO L226 Difference]: Without dead ends: 3179 [2020-04-18 19:40:41,131 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:40:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2020-04-18 19:40:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2491. [2020-04-18 19:40:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-04-18 19:40:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 7908 transitions. [2020-04-18 19:40:41,216 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 7908 transitions. Word has length 39 [2020-04-18 19:40:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:41,216 INFO L479 AbstractCegarLoop]: Abstraction has 2491 states and 7908 transitions. [2020-04-18 19:40:41,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:40:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 7908 transitions. [2020-04-18 19:40:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:41,223 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:41,223 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:41,224 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:41,224 INFO L82 PathProgramCache]: Analyzing trace with hash 313649386, now seen corresponding path program 1 times [2020-04-18 19:40:41,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:41,225 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [637577956] [2020-04-18 19:40:41,226 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:41,234 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1145 transitions. [2020-04-18 19:40:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-04-18 19:40:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:41,239 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1326646168, now seen corresponding path program 2 times [2020-04-18 19:40:41,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:41,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842623197] [2020-04-18 19:40:41,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:41,324 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 19:40:41,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842623197] [2020-04-18 19:40:41,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:41,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:41,326 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:41,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:41,353 INFO L259 McrAutomatonBuilder]: Finished intersection with 163 states and 353 transitions. [2020-04-18 19:40:41,354 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:41,383 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:41,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:41,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:41,384 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 6 states. [2020-04-18 19:40:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:41,535 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2020-04-18 19:40:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1262 transitions. [2020-04-18 19:40:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:40:41,536 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:41,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:41,537 INFO L82 PathProgramCache]: Analyzing trace with hash 313649386, now seen corresponding path program 3 times [2020-04-18 19:40:41,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:41,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025674039] [2020-04-18 19:40:41,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:41,614 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 19:40:41,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025674039] [2020-04-18 19:40:41,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:41,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:41,616 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:41,619 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:41,648 INFO L259 McrAutomatonBuilder]: Finished intersection with 216 states and 517 transitions. [2020-04-18 19:40:41,648 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:41,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:41,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:41,720 INFO L87 Difference]: Start difference. First operand 468 states and 1262 transitions. Second operand 6 states. [2020-04-18 19:40:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:41,780 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2020-04-18 19:40:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1262 transitions. [2020-04-18 19:40:41,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:41,783 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [637577956] [2020-04-18 19:40:41,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:41,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:41,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [637577956] [2020-04-18 19:40:41,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:40:41,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:41,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:40:41,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:40:41,786 INFO L87 Difference]: Start difference. First operand 2491 states and 7908 transitions. Second operand 10 states. [2020-04-18 19:40:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:42,093 INFO L93 Difference]: Finished difference Result 3262 states and 10220 transitions. [2020-04-18 19:40:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:40:42,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-04-18 19:40:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:42,104 INFO L225 Difference]: With dead ends: 3262 [2020-04-18 19:40:42,104 INFO L226 Difference]: Without dead ends: 2302 [2020-04-18 19:40:42,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:40:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-04-18 19:40:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2020-04-18 19:40:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-04-18 19:40:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 7207 transitions. [2020-04-18 19:40:42,188 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 7207 transitions. Word has length 41 [2020-04-18 19:40:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:42,189 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 7207 transitions. [2020-04-18 19:40:42,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:40:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 7207 transitions. [2020-04-18 19:40:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:42,197 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:42,197 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:42,197 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:42,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash -198753646, now seen corresponding path program 1 times [2020-04-18 19:40:42,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:42,198 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [686665360] [2020-04-18 19:40:42,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:42,215 INFO L259 McrAutomatonBuilder]: Finished intersection with 543 states and 1558 transitions. [2020-04-18 19:40:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states. [2020-04-18 19:40:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:42,223 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:42,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1839049200, now seen corresponding path program 2 times [2020-04-18 19:40:42,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:42,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979659395] [2020-04-18 19:40:42,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:42,314 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 19:40:42,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979659395] [2020-04-18 19:40:42,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:42,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:42,315 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:42,318 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:42,340 INFO L259 McrAutomatonBuilder]: Finished intersection with 143 states and 285 transitions. [2020-04-18 19:40:42,340 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:42,382 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:42,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:42,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:42,383 INFO L87 Difference]: Start difference. First operand 543 states. Second operand 7 states. [2020-04-18 19:40:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:42,490 INFO L93 Difference]: Finished difference Result 615 states and 1720 transitions. [2020-04-18 19:40:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1720 transitions. [2020-04-18 19:40:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:42,492 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:42,492 INFO L82 PathProgramCache]: Analyzing trace with hash -198753646, now seen corresponding path program 3 times [2020-04-18 19:40:42,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:42,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502269120] [2020-04-18 19:40:42,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:42,588 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 19:40:42,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502269120] [2020-04-18 19:40:42,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:42,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:42,589 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:42,592 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:42,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 410 transitions. [2020-04-18 19:40:42,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:42,686 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:40:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:40:42,687 INFO L87 Difference]: Start difference. First operand 615 states and 1720 transitions. Second operand 7 states. [2020-04-18 19:40:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:43,142 INFO L93 Difference]: Finished difference Result 615 states and 1720 transitions. [2020-04-18 19:40:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1720 transitions. [2020-04-18 19:40:43,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:43,145 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [686665360] [2020-04-18 19:40:43,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:43,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:43,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [686665360] [2020-04-18 19:40:43,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:40:43,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:40:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:40:43,149 INFO L87 Difference]: Start difference. First operand 2302 states and 7207 transitions. Second operand 12 states. [2020-04-18 19:40:43,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:43,637 INFO L93 Difference]: Finished difference Result 2752 states and 8368 transitions. [2020-04-18 19:40:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:40:43,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-04-18 19:40:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:43,645 INFO L225 Difference]: With dead ends: 2752 [2020-04-18 19:40:43,645 INFO L226 Difference]: Without dead ends: 1924 [2020-04-18 19:40:43,646 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:40:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-04-18 19:40:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1708. [2020-04-18 19:40:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-04-18 19:40:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 5119 transitions. [2020-04-18 19:40:43,696 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 5119 transitions. Word has length 42 [2020-04-18 19:40:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:43,696 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 5119 transitions. [2020-04-18 19:40:43,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:40:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 5119 transitions. [2020-04-18 19:40:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:43,700 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:43,700 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:43,701 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:43,701 INFO L82 PathProgramCache]: Analyzing trace with hash 130248879, now seen corresponding path program 1 times [2020-04-18 19:40:43,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:43,702 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2031133692] [2020-04-18 19:40:43,703 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:43,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 855 states and 2600 transitions. [2020-04-18 19:40:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states. [2020-04-18 19:40:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:43,731 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:43,731 INFO L82 PathProgramCache]: Analyzing trace with hash -661644175, now seen corresponding path program 2 times [2020-04-18 19:40:43,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:43,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552995055] [2020-04-18 19:40:43,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:43,817 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 19:40:43,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552995055] [2020-04-18 19:40:43,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:43,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:43,818 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:43,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:43,851 INFO L259 McrAutomatonBuilder]: Finished intersection with 258 states and 577 transitions. [2020-04-18 19:40:43,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:43,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:43,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:43,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:43,889 INFO L87 Difference]: Start difference. First operand 855 states. Second operand 6 states. [2020-04-18 19:40:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:44,057 INFO L93 Difference]: Finished difference Result 1255 states and 3652 transitions. [2020-04-18 19:40:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3652 transitions. [2020-04-18 19:40:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:44,060 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash 978651379, now seen corresponding path program 3 times [2020-04-18 19:40:44,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:44,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68005879] [2020-04-18 19:40:44,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:44,162 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 19:40:44,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68005879] [2020-04-18 19:40:44,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:44,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:44,163 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:44,167 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:44,199 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 534 transitions. [2020-04-18 19:40:44,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:44,267 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:44,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:40:44,268 INFO L87 Difference]: Start difference. First operand 1255 states and 3652 transitions. Second operand 7 states. [2020-04-18 19:40:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:44,535 INFO L93 Difference]: Finished difference Result 1255 states and 3652 transitions. [2020-04-18 19:40:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3652 transitions. [2020-04-18 19:40:44,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:44,538 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2031133692] [2020-04-18 19:40:44,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:44,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:44,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2031133692] [2020-04-18 19:40:44,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:40:44,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:40:44,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:40:44,540 INFO L87 Difference]: Start difference. First operand 1708 states and 5119 transitions. Second operand 11 states. [2020-04-18 19:40:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:44,888 INFO L93 Difference]: Finished difference Result 1591 states and 4603 transitions. [2020-04-18 19:40:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:40:44,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-04-18 19:40:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:44,891 INFO L225 Difference]: With dead ends: 1591 [2020-04-18 19:40:44,891 INFO L226 Difference]: Without dead ends: 784 [2020-04-18 19:40:44,892 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-04-18 19:40:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 743. [2020-04-18 19:40:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-04-18 19:40:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 2107 transitions. [2020-04-18 19:40:44,911 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 2107 transitions. Word has length 44 [2020-04-18 19:40:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:44,912 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 2107 transitions. [2020-04-18 19:40:44,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:40:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 2107 transitions. [2020-04-18 19:40:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:44,914 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:44,914 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:44,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1205239730, now seen corresponding path program 1 times [2020-04-18 19:40:44,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:44,916 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1675161342] [2020-04-18 19:40:44,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:44,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 1415 states and 4510 transitions. [2020-04-18 19:40:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states. [2020-04-18 19:40:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:44,966 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash -184887758, now seen corresponding path program 2 times [2020-04-18 19:40:44,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:44,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096128] [2020-04-18 19:40:44,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:45,049 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 19:40:45,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096128] [2020-04-18 19:40:45,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:45,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:45,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:45,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:45,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 276 states and 616 transitions. [2020-04-18 19:40:45,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:45,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:45,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:45,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:40:45,149 INFO L87 Difference]: Start difference. First operand 1415 states. Second operand 6 states. [2020-04-18 19:40:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:45,305 INFO L93 Difference]: Finished difference Result 2327 states and 7242 transitions. [2020-04-18 19:40:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 7242 transitions. [2020-04-18 19:40:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:45,311 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:45,311 INFO L82 PathProgramCache]: Analyzing trace with hash 58842548, now seen corresponding path program 3 times [2020-04-18 19:40:45,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:45,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331748708] [2020-04-18 19:40:45,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:40:45,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331748708] [2020-04-18 19:40:45,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:45,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:45,411 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:45,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:45,456 INFO L259 McrAutomatonBuilder]: Finished intersection with 300 states and 679 transitions. [2020-04-18 19:40:45,457 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:45,645 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 43 times. [2020-04-18 19:40:45,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:40:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:40:45,646 INFO L87 Difference]: Start difference. First operand 2327 states and 7242 transitions. Second operand 14 states. [2020-04-18 19:40:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:45,970 INFO L93 Difference]: Finished difference Result 3075 states and 9170 transitions. [2020-04-18 19:40:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 9170 transitions. [2020-04-18 19:40:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:45,977 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1799782802, now seen corresponding path program 4 times [2020-04-18 19:40:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:45,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821245184] [2020-04-18 19:40:45,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:46,071 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 19:40:46,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821245184] [2020-04-18 19:40:46,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:46,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:46,073 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:46,077 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:46,122 INFO L259 McrAutomatonBuilder]: Finished intersection with 264 states and 590 transitions. [2020-04-18 19:40:46,122 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:46,223 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:46,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:46,224 INFO L87 Difference]: Start difference. First operand 3075 states and 9170 transitions. Second operand 7 states. [2020-04-18 19:40:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:46,620 INFO L93 Difference]: Finished difference Result 3139 states and 9230 transitions. [2020-04-18 19:40:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 9230 transitions. [2020-04-18 19:40:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:46,627 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:40:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash -955476042, now seen corresponding path program 5 times [2020-04-18 19:40:46,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:46,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945488690] [2020-04-18 19:40:46,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:46,728 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 19:40:46,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945488690] [2020-04-18 19:40:46,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:46,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:46,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:46,733 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:46,799 INFO L259 McrAutomatonBuilder]: Finished intersection with 444 states and 1121 transitions. [2020-04-18 19:40:46,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:46,980 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 43 times. [2020-04-18 19:40:46,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:40:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 19:40:46,982 INFO L87 Difference]: Start difference. First operand 3139 states and 9230 transitions. Second operand 11 states. [2020-04-18 19:40:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:47,972 INFO L93 Difference]: Finished difference Result 4827 states and 13766 transitions. [2020-04-18 19:40:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 13766 transitions. [2020-04-18 19:40:47,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:47,981 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1675161342] [2020-04-18 19:40:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:47,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:40:47,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1675161342] [2020-04-18 19:40:47,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:40:47,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:40:47,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3290, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:40:47,984 INFO L87 Difference]: Start difference. First operand 743 states and 2107 transitions. Second operand 25 states. [2020-04-18 19:40:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:48,621 INFO L93 Difference]: Finished difference Result 730 states and 2071 transitions. [2020-04-18 19:40:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 19:40:48,622 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-04-18 19:40:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:48,623 INFO L225 Difference]: With dead ends: 730 [2020-04-18 19:40:48,623 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:40:48,625 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2020-04-18 19:40:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:40:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:40:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:40:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:40:48,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:40:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:48,627 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:40:48,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:40:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:40:48,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:48,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:40:48 BasicIcfg [2020-04-18 19:40:48,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:40:48,635 INFO L168 Benchmark]: Toolchain (without parser) took 15914.77 ms. Allocated memory was 136.8 MB in the beginning and 622.3 MB in the end (delta: 485.5 MB). Free memory was 100.1 MB in the beginning and 165.3 MB in the end (delta: -65.2 MB). Peak memory consumption was 420.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,636 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 19:40:48,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.10 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 156.9 MB in the end (delta: -58.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.15 ms. Allocated memory is still 199.8 MB. Free memory was 156.9 MB in the beginning and 154.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,638 INFO L168 Benchmark]: Boogie Preprocessor took 25.69 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,638 INFO L168 Benchmark]: RCFGBuilder took 485.01 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 131.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,639 INFO L168 Benchmark]: TraceAbstraction took 14564.27 ms. Allocated memory was 199.8 MB in the beginning and 622.3 MB in the end (delta: 422.6 MB). Free memory was 130.7 MB in the beginning and 165.3 MB in the end (delta: -34.6 MB). Peak memory consumption was 387.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:48,642 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 772.10 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 156.9 MB in the end (delta: -58.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.15 ms. Allocated memory is still 199.8 MB. Free memory was 156.9 MB in the beginning and 154.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.69 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.01 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 131.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14564.27 ms. Allocated memory was 199.8 MB in the beginning and 622.3 MB in the end (delta: 422.6 MB). Free memory was 130.7 MB in the beginning and 165.3 MB in the end (delta: -34.6 MB). Peak memory consumption was 387.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 844 SDtfs, 2147 SDslu, 4695 SDs, 0 SdLazy, 1015 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1142 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7267occurred 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: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 4061 StatesRemovedByMinimization, 7 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...