/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:19:11,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:19:11,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:19:11,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:19:11,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:19:11,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:19:11,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:19:11,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:19:11,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:19:11,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:19:11,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:19:11,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:19:11,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:19:11,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:19:11,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:19:11,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:19:11,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:19:11,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:19:11,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:19:11,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:19:11,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:19:11,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:19:11,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:19:11,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:19:11,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:19:11,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:19:11,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:19:11,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:19:11,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:19:11,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:19:11,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:19:11,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:19:11,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:19:11,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:19:11,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:19:11,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:19:11,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:19:12,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:19:12,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:19:12,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:19:12,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:19:12,004 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 19:19:12,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:19:12,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:19:12,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:19:12,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:19:12,021 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:19:12,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:19:12,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:19:12,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:19:12,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:19:12,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:19:12,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:19:12,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:19:12,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:19:12,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:19:12,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:19:12,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:19:12,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:19:12,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:19:12,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:19:12,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:19:12,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:19:12,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:19:12,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:19:12,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:19:12,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:19:12,025 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:19:12,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:19:12,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:19:12,025 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:19:12,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:19:12,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:19:12,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:19:12,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:19:12,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:19:12,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:19:12,353 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:19:12,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 19:19:12,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a19c75853/2d9aa118a76c4823972aaee04f5023c2/FLAGfcd16cefa [2020-04-18 19:19:12,948 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:19:12,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 19:19:12,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a19c75853/2d9aa118a76c4823972aaee04f5023c2/FLAGfcd16cefa [2020-04-18 19:19:13,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a19c75853/2d9aa118a76c4823972aaee04f5023c2 [2020-04-18 19:19:13,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:19:13,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:19:13,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:19:13,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:19:13,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:19:13,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:19:13" (1/1) ... [2020-04-18 19:19:13,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a33ea7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:13, skipping insertion in model container [2020-04-18 19:19:13,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:19:13" (1/1) ... [2020-04-18 19:19:13,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:19:13,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:19:13,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:19:13,923 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:19:13,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:19:14,044 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:19:14,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14 WrapperNode [2020-04-18 19:19:14,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:19:14,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:19:14,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:19:14,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:19:14,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:19:14,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:19:14,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:19:14,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:19:14,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (1/1) ... [2020-04-18 19:19:14,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:19:14,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:19:14,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:19:14,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:19:14,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (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 19:19:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:19:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:19:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:19:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:19:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:19:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:19:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:19:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:19:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:19:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:19:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:19:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:19:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:19:14,185 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 19:19:14,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:19:14,576 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:19:14,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:19:14 BoogieIcfgContainer [2020-04-18 19:19:14,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:19:14,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:19:14,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:19:14,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:19:14,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:19:13" (1/3) ... [2020-04-18 19:19:14,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7168b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:19:14, skipping insertion in model container [2020-04-18 19:19:14,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:19:14" (2/3) ... [2020-04-18 19:19:14,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7168b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:19:14, skipping insertion in model container [2020-04-18 19:19:14,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:19:14" (3/3) ... [2020-04-18 19:19:14,588 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-04-18 19:19:14,598 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:19:14,598 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:19:14,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:19:14,607 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:19:14,632 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,633 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,633 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,633 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,634 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,634 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,635 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,635 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,635 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,635 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,636 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,636 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,637 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,637 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,637 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,637 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,638 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,638 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,642 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,642 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,643 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,643 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,656 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,657 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,657 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,660 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,660 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:19:14,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:19:14,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:19:14,691 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:19:14,692 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:19:14,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:19:14,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:19:14,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:19:14,692 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:19:14,692 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:19:14,704 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:19:15,186 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:19:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:19:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:19:15,215 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:15,216 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] [2020-04-18 19:19:15,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:15,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 19:19:15,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:15,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [250498176] [2020-04-18 19:19:15,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:15,261 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:19:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:19:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:19:15,264 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 2 times [2020-04-18 19:19:15,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:15,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019494766] [2020-04-18 19:19:15,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:19:15,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019494766] [2020-04-18 19:19:15,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:15,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:15,774 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:15,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:15,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:19:15,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:15,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:19:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:15,870 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:19:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:15,959 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:19:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:19:15,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:15,960 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [250498176] [2020-04-18 19:19:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:15,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:19:15,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [250498176] [2020-04-18 19:19:15,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:19:15,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:15,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:19:15,971 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 19:19:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:16,549 INFO L93 Difference]: Finished difference Result 16996 states and 58455 transitions. [2020-04-18 19:19:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:19:16,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:19:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:16,630 INFO L225 Difference]: With dead ends: 16996 [2020-04-18 19:19:16,631 INFO L226 Difference]: Without dead ends: 4376 [2020-04-18 19:19:16,635 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 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 19:19:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2020-04-18 19:19:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3416. [2020-04-18 19:19:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2020-04-18 19:19:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 11179 transitions. [2020-04-18 19:19:16,920 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 11179 transitions. Word has length 36 [2020-04-18 19:19:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:16,923 INFO L479 AbstractCegarLoop]: Abstraction has 3416 states and 11179 transitions. [2020-04-18 19:19:16,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:19:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 11179 transitions. [2020-04-18 19:19:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:19:17,004 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:17,010 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] [2020-04-18 19:19:17,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1558896175, now seen corresponding path program 1 times [2020-04-18 19:19:17,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:17,012 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [622283866] [2020-04-18 19:19:17,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:17,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 157 states and 320 transitions. [2020-04-18 19:19:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-04-18 19:19:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:19:17,028 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:17,028 INFO L82 PathProgramCache]: Analyzing trace with hash -258465261, now seen corresponding path program 2 times [2020-04-18 19:19:17,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:17,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200277072] [2020-04-18 19:19:17,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:17,284 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 19:19:17,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200277072] [2020-04-18 19:19:17,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:17,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:17,285 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:17,291 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:17,302 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 170 transitions. [2020-04-18 19:19:17,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:17,365 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:19:17,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:17,366 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 7 states. [2020-04-18 19:19:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:17,439 INFO L93 Difference]: Finished difference Result 157 states and 320 transitions. [2020-04-18 19:19:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 320 transitions. [2020-04-18 19:19:17,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:17,442 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [622283866] [2020-04-18 19:19:17,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:17,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:19:17,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [622283866] [2020-04-18 19:19:17,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:19:17,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:19:17,450 INFO L87 Difference]: Start difference. First operand 3416 states and 11179 transitions. Second operand 7 states. [2020-04-18 19:19:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:17,721 INFO L93 Difference]: Finished difference Result 4834 states and 15587 transitions. [2020-04-18 19:19:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:19:17,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 19:19:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:17,748 INFO L225 Difference]: With dead ends: 4834 [2020-04-18 19:19:17,748 INFO L226 Difference]: Without dead ends: 3490 [2020-04-18 19:19:17,752 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:19:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-04-18 19:19:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 2961. [2020-04-18 19:19:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-04-18 19:19:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 9725 transitions. [2020-04-18 19:19:17,953 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 9725 transitions. Word has length 40 [2020-04-18 19:19:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:17,953 INFO L479 AbstractCegarLoop]: Abstraction has 2961 states and 9725 transitions. [2020-04-18 19:19:17,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:19:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 9725 transitions. [2020-04-18 19:19:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:19:17,961 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:17,961 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 19:19:17,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -739812179, now seen corresponding path program 1 times [2020-04-18 19:19:17,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:17,962 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [295735627] [2020-04-18 19:19:17,964 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:17,967 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 19:19:17,969 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 19:19:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:19:17,970 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash 609212211, now seen corresponding path program 2 times [2020-04-18 19:19:17,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:17,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092376349] [2020-04-18 19:19:17,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:18,107 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 19:19:18,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092376349] [2020-04-18 19:19:18,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:18,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:18,108 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:18,112 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:18,124 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 181 transitions. [2020-04-18 19:19:18,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:18,177 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:19:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:18,178 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 7 states. [2020-04-18 19:19:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:18,398 INFO L93 Difference]: Finished difference Result 213 states and 437 transitions. [2020-04-18 19:19:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 437 transitions. [2020-04-18 19:19:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:19:18,399 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:19:18,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:18,401 INFO L82 PathProgramCache]: Analyzing trace with hash -739812179, now seen corresponding path program 3 times [2020-04-18 19:19:18,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:18,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023266950] [2020-04-18 19:19:18,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:18,559 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 19:19:18,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023266950] [2020-04-18 19:19:18,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:18,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:18,561 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:18,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:18,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 177 transitions. [2020-04-18 19:19:18,579 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:18,818 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:19:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:19:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:19:18,820 INFO L87 Difference]: Start difference. First operand 213 states and 437 transitions. Second operand 16 states. [2020-04-18 19:19:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:19,063 INFO L93 Difference]: Finished difference Result 213 states and 437 transitions. [2020-04-18 19:19:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 437 transitions. [2020-04-18 19:19:19,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:19,064 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [295735627] [2020-04-18 19:19:19,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:19,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:19:19,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [295735627] [2020-04-18 19:19:19,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:19:19,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:19:19,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:19:19,067 INFO L87 Difference]: Start difference. First operand 2961 states and 9725 transitions. Second operand 16 states. [2020-04-18 19:19:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:19,332 INFO L93 Difference]: Finished difference Result 5065 states and 16459 transitions. [2020-04-18 19:19:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:19:19,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-04-18 19:19:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:19,355 INFO L225 Difference]: With dead ends: 5065 [2020-04-18 19:19:19,356 INFO L226 Difference]: Without dead ends: 3021 [2020-04-18 19:19:19,358 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:19:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2020-04-18 19:19:19,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2637. [2020-04-18 19:19:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2637 states. [2020-04-18 19:19:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 8504 transitions. [2020-04-18 19:19:19,455 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 8504 transitions. Word has length 41 [2020-04-18 19:19:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:19,456 INFO L479 AbstractCegarLoop]: Abstraction has 2637 states and 8504 transitions. [2020-04-18 19:19:19,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:19:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 8504 transitions. [2020-04-18 19:19:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:19:19,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:19,463 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 19:19:19,463 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:19,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:19,463 INFO L82 PathProgramCache]: Analyzing trace with hash -736309433, now seen corresponding path program 1 times [2020-04-18 19:19:19,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:19,464 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1315814885] [2020-04-18 19:19:19,465 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:19,470 INFO L259 McrAutomatonBuilder]: Finished intersection with 256 states and 576 transitions. [2020-04-18 19:19:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2020-04-18 19:19:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:19:19,473 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:19,474 INFO L82 PathProgramCache]: Analyzing trace with hash -341795477, now seen corresponding path program 2 times [2020-04-18 19:19:19,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:19,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242457680] [2020-04-18 19:19:19,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:19,657 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 19:19:19,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242457680] [2020-04-18 19:19:19,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:19,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:19,660 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:19,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:19,679 INFO L259 McrAutomatonBuilder]: Finished intersection with 128 states and 230 transitions. [2020-04-18 19:19:19,679 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:19,724 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:19:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:19,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:19,725 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 7 states. [2020-04-18 19:19:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:19,937 INFO L93 Difference]: Finished difference Result 290 states and 625 transitions. [2020-04-18 19:19:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 625 transitions. [2020-04-18 19:19:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:19:19,938 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:19:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -736309433, now seen corresponding path program 3 times [2020-04-18 19:19:19,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:19,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083154760] [2020-04-18 19:19:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:20,087 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 19:19:20,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083154760] [2020-04-18 19:19:20,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:20,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:20,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:20,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:20,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 262 transitions. [2020-04-18 19:19:20,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:20,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:19:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:19:20,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:19:20,433 INFO L87 Difference]: Start difference. First operand 290 states and 625 transitions. Second operand 16 states. [2020-04-18 19:19:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:21,183 INFO L93 Difference]: Finished difference Result 433 states and 882 transitions. [2020-04-18 19:19:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 882 transitions. [2020-04-18 19:19:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:19:21,185 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:19:21,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:21,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1412206273, now seen corresponding path program 4 times [2020-04-18 19:19:21,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:21,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501940968] [2020-04-18 19:19:21,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:21,339 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 19:19:21,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501940968] [2020-04-18 19:19:21,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:21,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:21,340 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:21,344 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:21,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 190 transitions. [2020-04-18 19:19:21,357 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:21,504 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:19:21,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:19:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1301, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:19:21,506 INFO L87 Difference]: Start difference. First operand 433 states and 882 transitions. Second operand 16 states. [2020-04-18 19:19:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:21,816 INFO L93 Difference]: Finished difference Result 450 states and 898 transitions. [2020-04-18 19:19:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 898 transitions. [2020-04-18 19:19:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:19:21,817 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:19:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1791563141, now seen corresponding path program 5 times [2020-04-18 19:19:21,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:21,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660405624] [2020-04-18 19:19:21,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:21,921 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 19:19:21,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660405624] [2020-04-18 19:19:21,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:21,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:21,923 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:21,928 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:22,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 108 states and 190 transitions. [2020-04-18 19:19:22,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:22,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:19:22,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:19:22,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=2442, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 19:19:22,590 INFO L87 Difference]: Start difference. First operand 450 states and 898 transitions. Second operand 20 states. [2020-04-18 19:19:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:23,174 INFO L93 Difference]: Finished difference Result 479 states and 947 transitions. [2020-04-18 19:19:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 947 transitions. [2020-04-18 19:19:23,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:23,177 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1315814885] [2020-04-18 19:19:23,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:23,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:19:23,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1315814885] [2020-04-18 19:19:23,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-18 19:19:23,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:23,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-18 19:19:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=2999, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:19:23,183 INFO L87 Difference]: Start difference. First operand 2637 states and 8504 transitions. Second operand 31 states. [2020-04-18 19:19:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:27,187 INFO L93 Difference]: Finished difference Result 7847 states and 24561 transitions. [2020-04-18 19:19:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-04-18 19:19:27,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 42 [2020-04-18 19:19:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:27,213 INFO L225 Difference]: With dead ends: 7847 [2020-04-18 19:19:27,214 INFO L226 Difference]: Without dead ends: 2677 [2020-04-18 19:19:27,218 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 286 SyntacticMatches, 6 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5068 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2703, Invalid=11817, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 19:19:27,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-04-18 19:19:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 1781. [2020-04-18 19:19:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1781 states. [2020-04-18 19:19:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 5488 transitions. [2020-04-18 19:19:27,280 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 5488 transitions. Word has length 42 [2020-04-18 19:19:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:27,281 INFO L479 AbstractCegarLoop]: Abstraction has 1781 states and 5488 transitions. [2020-04-18 19:19:27,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-18 19:19:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 5488 transitions. [2020-04-18 19:19:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:19:27,285 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:27,285 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] [2020-04-18 19:19:27,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:27,286 INFO L82 PathProgramCache]: Analyzing trace with hash -14487667, now seen corresponding path program 1 times [2020-04-18 19:19:27,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:27,287 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1416932586] [2020-04-18 19:19:27,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:27,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 868 states and 2633 transitions. [2020-04-18 19:19:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states. [2020-04-18 19:19:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:19:27,316 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:27,316 INFO L82 PathProgramCache]: Analyzing trace with hash 388244849, now seen corresponding path program 2 times [2020-04-18 19:19:27,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:27,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428945111] [2020-04-18 19:19:27,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:27,399 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 19:19:27,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428945111] [2020-04-18 19:19:27,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:27,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:19:27,400 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:27,404 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:27,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 418 states and 1051 transitions. [2020-04-18 19:19:27,465 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:27,620 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:19:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:27,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:27,622 INFO L87 Difference]: Start difference. First operand 868 states. Second operand 7 states. [2020-04-18 19:19:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:27,853 INFO L93 Difference]: Finished difference Result 1234 states and 3478 transitions. [2020-04-18 19:19:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3478 transitions. [2020-04-18 19:19:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:19:27,856 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:19:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash -740768527, now seen corresponding path program 3 times [2020-04-18 19:19:27,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:27,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317869558] [2020-04-18 19:19:27,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:27,989 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 19:19:27,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317869558] [2020-04-18 19:19:27,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:27,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:27,990 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:27,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:28,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 330 states and 805 transitions. [2020-04-18 19:19:28,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:28,065 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:19:28,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:28,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:19:28,068 INFO L87 Difference]: Start difference. First operand 1234 states and 3478 transitions. Second operand 7 states. [2020-04-18 19:19:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:28,163 INFO L93 Difference]: Finished difference Result 1246 states and 3494 transitions. [2020-04-18 19:19:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 3494 transitions. [2020-04-18 19:19:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:19:28,166 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:19:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1935261073, now seen corresponding path program 4 times [2020-04-18 19:19:28,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:28,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844058248] [2020-04-18 19:19:28,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:28,296 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 19:19:28,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844058248] [2020-04-18 19:19:28,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:28,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:28,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:28,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:28,352 INFO L259 McrAutomatonBuilder]: Finished intersection with 318 states and 792 transitions. [2020-04-18 19:19:28,353 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:28,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:19:28,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:19:28,503 INFO L87 Difference]: Start difference. First operand 1246 states and 3494 transitions. Second operand 7 states. [2020-04-18 19:19:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:28,633 INFO L93 Difference]: Finished difference Result 1246 states and 3494 transitions. [2020-04-18 19:19:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 3494 transitions. [2020-04-18 19:19:28,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:28,637 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1416932586] [2020-04-18 19:19:28,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:28,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:19:28,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1416932586] [2020-04-18 19:19:28,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:19:28,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:19:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:19:28,639 INFO L87 Difference]: Start difference. First operand 1781 states and 5488 transitions. Second operand 13 states. [2020-04-18 19:19:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:29,187 INFO L93 Difference]: Finished difference Result 2306 states and 7032 transitions. [2020-04-18 19:19:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:19:29,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-04-18 19:19:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:29,199 INFO L225 Difference]: With dead ends: 2306 [2020-04-18 19:19:29,199 INFO L226 Difference]: Without dead ends: 1454 [2020-04-18 19:19:29,200 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:19:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-04-18 19:19:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1430. [2020-04-18 19:19:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-04-18 19:19:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4264 transitions. [2020-04-18 19:19:29,237 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4264 transitions. Word has length 45 [2020-04-18 19:19:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:29,237 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 4264 transitions. [2020-04-18 19:19:29,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:19:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4264 transitions. [2020-04-18 19:19:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:19:29,241 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:29,241 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 19:19:29,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:29,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1958843964, now seen corresponding path program 1 times [2020-04-18 19:19:29,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:29,243 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1775318817] [2020-04-18 19:19:29,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:29,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 19:19:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 19:19:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:19:29,286 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:29,287 INFO L82 PathProgramCache]: Analyzing trace with hash -322015530, now seen corresponding path program 2 times [2020-04-18 19:19:29,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:29,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869530198] [2020-04-18 19:19:29,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:29,375 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 19:19:29,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869530198] [2020-04-18 19:19:29,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:29,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:19:29,376 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:29,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:29,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 436 states and 1096 transitions. [2020-04-18 19:19:29,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:29,570 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:19:29,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:29,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:29,570 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 7 states. [2020-04-18 19:19:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:29,763 INFO L93 Difference]: Finished difference Result 1544 states and 4451 transitions. [2020-04-18 19:19:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 4451 transitions. [2020-04-18 19:19:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:19:29,767 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:19:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash -961691818, now seen corresponding path program 3 times [2020-04-18 19:19:29,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:29,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991076013] [2020-04-18 19:19:29,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:29,892 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 19:19:29,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991076013] [2020-04-18 19:19:29,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:29,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:29,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:29,898 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:29,941 INFO L259 McrAutomatonBuilder]: Finished intersection with 336 states and 816 transitions. [2020-04-18 19:19:29,942 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:29,955 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:19:29,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:29,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:19:29,956 INFO L87 Difference]: Start difference. First operand 1544 states and 4451 transitions. Second operand 7 states. [2020-04-18 19:19:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:30,072 INFO L93 Difference]: Finished difference Result 1616 states and 4607 transitions. [2020-04-18 19:19:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 4607 transitions. [2020-04-18 19:19:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:19:30,076 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:19:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2074379090, now seen corresponding path program 4 times [2020-04-18 19:19:30,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:30,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062967889] [2020-04-18 19:19:30,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:30,190 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 19:19:30,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062967889] [2020-04-18 19:19:30,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:30,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:30,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:30,196 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:30,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 339 states and 841 transitions. [2020-04-18 19:19:30,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:30,385 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:19:30,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:19:30,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:19:30,386 INFO L87 Difference]: Start difference. First operand 1616 states and 4607 transitions. Second operand 9 states. [2020-04-18 19:19:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:30,627 INFO L93 Difference]: Finished difference Result 1616 states and 4607 transitions. [2020-04-18 19:19:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 4607 transitions. [2020-04-18 19:19:30,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:30,631 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1775318817] [2020-04-18 19:19:30,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:30,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:19:30,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1775318817] [2020-04-18 19:19:30,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:19:30,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:19:30,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:19:30,633 INFO L87 Difference]: Start difference. First operand 1430 states and 4264 transitions. Second operand 15 states. [2020-04-18 19:19:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:31,079 INFO L93 Difference]: Finished difference Result 1451 states and 4175 transitions. [2020-04-18 19:19:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:19:31,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-04-18 19:19:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:31,088 INFO L225 Difference]: With dead ends: 1451 [2020-04-18 19:19:31,088 INFO L226 Difference]: Without dead ends: 893 [2020-04-18 19:19:31,089 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=1357, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:19:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-04-18 19:19:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 765. [2020-04-18 19:19:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-04-18 19:19:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2099 transitions. [2020-04-18 19:19:31,119 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2099 transitions. Word has length 46 [2020-04-18 19:19:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:31,120 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 2099 transitions. [2020-04-18 19:19:31,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:19:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2099 transitions. [2020-04-18 19:19:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:31,121 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:19:31,122 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, 1, 1] [2020-04-18 19:19:31,122 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:19:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1490873073, now seen corresponding path program 1 times [2020-04-18 19:19:31,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:19:31,123 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1588969285] [2020-04-18 19:19:31,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:31,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:19:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:19:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:31,198 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:19:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash 208483833, now seen corresponding path program 2 times [2020-04-18 19:19:31,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:31,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913749869] [2020-04-18 19:19:31,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:31,287 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 19:19:31,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913749869] [2020-04-18 19:19:31,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:31,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:19:31,288 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:31,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:31,326 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 544 transitions. [2020-04-18 19:19:31,328 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:31,391 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:19:31,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:31,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:19:31,392 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 7 states. [2020-04-18 19:19:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:31,625 INFO L93 Difference]: Finished difference Result 3204 states and 10145 transitions. [2020-04-18 19:19:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 10145 transitions. [2020-04-18 19:19:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:31,632 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:19:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash -436168007, now seen corresponding path program 3 times [2020-04-18 19:19:31,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:31,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128212697] [2020-04-18 19:19:31,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:31,731 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 19:19:31,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128212697] [2020-04-18 19:19:31,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:31,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:31,732 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:31,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:31,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 542 transitions. [2020-04-18 19:19:31,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:31,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:19:31,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:19:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:19:31,777 INFO L87 Difference]: Start difference. First operand 3204 states and 10145 transitions. Second operand 7 states. [2020-04-18 19:19:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:31,900 INFO L93 Difference]: Finished difference Result 3396 states and 10641 transitions. [2020-04-18 19:19:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 10641 transitions. [2020-04-18 19:19:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:31,906 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:19:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1920943575, now seen corresponding path program 4 times [2020-04-18 19:19:31,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:31,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454856526] [2020-04-18 19:19:31,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:31,985 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 19:19:31,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454856526] [2020-04-18 19:19:31,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:31,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:19:31,986 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:31,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:32,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 465 states and 1173 transitions. [2020-04-18 19:19:32,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:32,192 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 19:19:32,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:19:32,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:19:32,193 INFO L87 Difference]: Start difference. First operand 3396 states and 10641 transitions. Second operand 11 states. [2020-04-18 19:19:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:32,738 INFO L93 Difference]: Finished difference Result 3982 states and 12320 transitions. [2020-04-18 19:19:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 12320 transitions. [2020-04-18 19:19:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:32,745 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:19:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1591883405, now seen corresponding path program 5 times [2020-04-18 19:19:32,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:32,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421967079] [2020-04-18 19:19:32,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:32,853 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 19:19:32,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421967079] [2020-04-18 19:19:32,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:32,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:32,854 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:32,858 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:32,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 382 states and 938 transitions. [2020-04-18 19:19:32,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:33,164 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 41 times. [2020-04-18 19:19:33,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:19:33,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:19:33,165 INFO L87 Difference]: Start difference. First operand 3982 states and 12320 transitions. Second operand 16 states. [2020-04-18 19:19:34,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:34,265 INFO L93 Difference]: Finished difference Result 6662 states and 19752 transitions. [2020-04-18 19:19:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6662 states and 19752 transitions. [2020-04-18 19:19:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:34,275 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:19:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2049951697, now seen corresponding path program 6 times [2020-04-18 19:19:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:34,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698358957] [2020-04-18 19:19:34,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:34,362 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 19:19:34,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698358957] [2020-04-18 19:19:34,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:34,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:19:34,363 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:34,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:34,429 INFO L259 McrAutomatonBuilder]: Finished intersection with 363 states and 897 transitions. [2020-04-18 19:19:34,429 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:34,539 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:19:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:19:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1925, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 19:19:34,540 INFO L87 Difference]: Start difference. First operand 6662 states and 19752 transitions. Second operand 6 states. [2020-04-18 19:19:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:34,756 INFO L93 Difference]: Finished difference Result 7450 states and 21125 transitions. [2020-04-18 19:19:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 21125 transitions. [2020-04-18 19:19:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:34,767 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:19:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2355293, now seen corresponding path program 7 times [2020-04-18 19:19:34,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:34,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321502842] [2020-04-18 19:19:34,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:34,860 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 19:19:34,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321502842] [2020-04-18 19:19:34,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:34,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:34,861 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:34,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:34,920 INFO L259 McrAutomatonBuilder]: Finished intersection with 325 states and 786 transitions. [2020-04-18 19:19:34,920 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:34,960 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:19:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:19:34,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2572, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 19:19:34,961 INFO L87 Difference]: Start difference. First operand 7450 states and 21125 transitions. Second operand 8 states. [2020-04-18 19:19:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:35,389 INFO L93 Difference]: Finished difference Result 8652 states and 24121 transitions. [2020-04-18 19:19:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 24121 transitions. [2020-04-18 19:19:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:19:35,407 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 19:19:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:19:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash 163829825, now seen corresponding path program 8 times [2020-04-18 19:19:35,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:19:35,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559177656] [2020-04-18 19:19:35,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:19:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:19:35,517 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 19:19:35,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559177656] [2020-04-18 19:19:35,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:19:35,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:19:35,520 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:19:35,524 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:19:35,575 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 740 transitions. [2020-04-18 19:19:35,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:19:35,637 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 31 times. [2020-04-18 19:19:35,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:19:35,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3075, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:19:35,639 INFO L87 Difference]: Start difference. First operand 8652 states and 24121 transitions. Second operand 8 states. [2020-04-18 19:19:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:35,962 INFO L93 Difference]: Finished difference Result 8852 states and 24562 transitions. [2020-04-18 19:19:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 24562 transitions. [2020-04-18 19:19:35,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:35,974 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1588969285] [2020-04-18 19:19:35,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:19:35,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:19:35,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1588969285] [2020-04-18 19:19:35,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:19:35,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:19:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:19:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=648, Invalid=3384, Unknown=0, NotChecked=0, Total=4032 [2020-04-18 19:19:35,976 INFO L87 Difference]: Start difference. First operand 765 states and 2099 transitions. Second operand 25 states. [2020-04-18 19:19:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:19:37,512 INFO L93 Difference]: Finished difference Result 1486 states and 4140 transitions. [2020-04-18 19:19:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-18 19:19:37,513 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2020-04-18 19:19:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:19:37,513 INFO L225 Difference]: With dead ends: 1486 [2020-04-18 19:19:37,513 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:19:37,516 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 591 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3253 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1419, Invalid=8283, Unknown=0, NotChecked=0, Total=9702 [2020-04-18 19:19:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:19:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:19:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:19:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:19:37,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:19:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:19:37,517 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:19:37,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:19:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:19:37,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:19:37,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:19:37 BasicIcfg [2020-04-18 19:19:37,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:19:37,523 INFO L168 Benchmark]: Toolchain (without parser) took 24245.32 ms. Allocated memory was 144.7 MB in the beginning and 735.6 MB in the end (delta: 590.9 MB). Free memory was 101.3 MB in the beginning and 202.8 MB in the end (delta: -101.5 MB). Peak memory consumption was 489.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,524 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.38 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.2 MB in the beginning and 158.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.76 ms. Allocated memory is still 201.3 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,526 INFO L168 Benchmark]: Boogie Preprocessor took 27.60 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,527 INFO L168 Benchmark]: RCFGBuilder took 458.15 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,527 INFO L168 Benchmark]: TraceAbstraction took 22940.06 ms. Allocated memory was 201.3 MB in the beginning and 735.6 MB in the end (delta: 534.2 MB). Free memory was 132.3 MB in the beginning and 202.8 MB in the end (delta: -70.5 MB). Peak memory consumption was 463.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:19:37,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.38 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.2 MB in the beginning and 158.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.76 ms. Allocated memory is still 201.3 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.60 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.15 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22940.06 ms. Allocated memory was 201.3 MB in the beginning and 735.6 MB in the end (delta: 534.2 MB). Free memory was 132.3 MB in the beginning and 202.8 MB in the end (delta: -70.5 MB). Peak memory consumption was 463.8 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 777 SDtfs, 4126 SDslu, 5839 SDs, 0 SdLazy, 1656 SolverSat, 546 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1830 GetRequests, 1469 SyntacticMatches, 14 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9428 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 2921 StatesRemovedByMinimization, 6 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...