/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/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:05:36,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:05:36,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:05:36,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:05:36,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:05:36,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:05:36,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:05:36,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:05:36,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:05:36,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:05:36,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:05:36,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:05:36,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:05:36,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:05:36,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:05:36,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:05:36,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:05:36,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:05:36,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:05:36,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:05:36,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:05:36,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:05:36,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:05:36,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:05:36,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:05:36,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:05:36,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:05:36,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:05:36,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:05:36,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:05:36,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:05:36,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:05:36,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:05:36,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:05:36,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:05:36,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:05:36,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:05:36,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:05:36,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:05:36,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:05:36,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:05:36,054 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 20:05:36,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:05:36,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:05:36,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:05:36,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:05:36,081 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:05:36,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:05:36,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:05:36,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:05:36,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:05:36,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:05:36,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:05:36,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:05:36,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:05:36,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:05:36,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:05:36,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:05:36,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:05:36,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:05:36,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:05:36,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:05:36,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:05:36,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:05:36,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:05:36,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:05:36,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:05:36,087 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:05:36,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:05:36,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:05:36,088 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:05:36,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:05:36,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:05:36,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:05:36,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:05:36,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:05:36,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:05:36,435 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:05:36,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-04-18 20:05:36,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5012b56d6/c4e5e0d78446484da7cb2307a167a129/FLAG65abd3563 [2020-04-18 20:05:36,990 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:05:36,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-04-18 20:05:37,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5012b56d6/c4e5e0d78446484da7cb2307a167a129/FLAG65abd3563 [2020-04-18 20:05:37,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5012b56d6/c4e5e0d78446484da7cb2307a167a129 [2020-04-18 20:05:37,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:05:37,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:05:37,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:37,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:05:37,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:05:37,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:37" (1/1) ... [2020-04-18 20:05:37,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee12d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:37, skipping insertion in model container [2020-04-18 20:05:37,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:37" (1/1) ... [2020-04-18 20:05:37,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:05:37,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:05:37,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:37,999 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:05:38,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:38,129 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:05:38,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38 WrapperNode [2020-04-18 20:05:38,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:38,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:38,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:05:38,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:05:38,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:38,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:05:38,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:05:38,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:05:38,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (1/1) ... [2020-04-18 20:05:38,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:05:38,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:05:38,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:05:38,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:05:38,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (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 20:05:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:05:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:05:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:05:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:05:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:05:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:05:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:05:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:05:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:05:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:05:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:05:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:05:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:05:38,287 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 20:05:38,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:05:38,698 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:05:38,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:38 BoogieIcfgContainer [2020-04-18 20:05:38,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:05:38,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:05:38,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:05:38,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:05:38,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:05:37" (1/3) ... [2020-04-18 20:05:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be23b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:38, skipping insertion in model container [2020-04-18 20:05:38,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:38" (2/3) ... [2020-04-18 20:05:38,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be23b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:38, skipping insertion in model container [2020-04-18 20:05:38,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:38" (3/3) ... [2020-04-18 20:05:38,714 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-04-18 20:05:38,723 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:05:38,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:05:38,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:05:38,731 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:05:38,754 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,755 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,755 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,755 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,756 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,756 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,757 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,757 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,757 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,757 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,758 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,758 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,759 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,759 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,759 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,759 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,760 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,760 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,764 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,765 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,765 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,766 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,776 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,777 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,777 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,777 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,780 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,780 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:38,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:05:38,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:05:38,821 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:05:38,821 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:05:38,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:05:38,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:05:38,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:05:38,822 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:05:38,822 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:05:38,838 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 20:05:39,413 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 20:05:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 20:05:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:05:39,457 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:39,458 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 20:05:39,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 1 times [2020-04-18 20:05:39,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:39,475 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [479522164] [2020-04-18 20:05:39,494 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:39,512 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:05:39,515 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 20:05:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:05:39,516 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:39,517 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 2 times [2020-04-18 20:05:39,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:39,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147928709] [2020-04-18 20:05:39,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:40,064 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 20:05:40,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147928709] [2020-04-18 20:05:40,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:40,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:40,068 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:40,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:40,086 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:05:40,086 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:40,153 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:40,161 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 20:05:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:40,300 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 20:05:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 20:05:40,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:40,302 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [479522164] [2020-04-18 20:05:40,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:40,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:40,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [479522164] [2020-04-18 20:05:40,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:40,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:40,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:40,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:40,315 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 20:05:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:40,787 INFO L93 Difference]: Finished difference Result 19956 states and 68898 transitions. [2020-04-18 20:05:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:05:40,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 20:05:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:40,870 INFO L225 Difference]: With dead ends: 19956 [2020-04-18 20:05:40,870 INFO L226 Difference]: Without dead ends: 5718 [2020-04-18 20:05:40,877 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2020-04-18 20:05:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4428. [2020-04-18 20:05:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-04-18 20:05:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 14501 transitions. [2020-04-18 20:05:41,370 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 14501 transitions. Word has length 36 [2020-04-18 20:05:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:41,373 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 14501 transitions. [2020-04-18 20:05:41,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 14501 transitions. [2020-04-18 20:05:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:05:41,388 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:41,396 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] [2020-04-18 20:05:41,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 1 times [2020-04-18 20:05:41,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:41,399 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1339316189] [2020-04-18 20:05:41,401 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:41,405 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 20:05:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 20:05:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:05:41,408 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:41,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 2 times [2020-04-18 20:05:41,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:41,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29411025] [2020-04-18 20:05:41,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:41,587 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 20:05:41,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29411025] [2020-04-18 20:05:41,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:41,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:41,588 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:41,593 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:41,610 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 20:05:41,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:41,647 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:41,648 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-04-18 20:05:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:41,711 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 20:05:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 20:05:41,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:41,715 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1339316189] [2020-04-18 20:05:41,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:41,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:41,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1339316189] [2020-04-18 20:05:41,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:41,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:41,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:41,718 INFO L87 Difference]: Start difference. First operand 4428 states and 14501 transitions. Second operand 6 states. [2020-04-18 20:05:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:41,887 INFO L93 Difference]: Finished difference Result 4778 states and 15501 transitions. [2020-04-18 20:05:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:05:41,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 20:05:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:41,912 INFO L225 Difference]: With dead ends: 4778 [2020-04-18 20:05:41,913 INFO L226 Difference]: Without dead ends: 3082 [2020-04-18 20:05:41,923 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-04-18 20:05:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2961. [2020-04-18 20:05:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-04-18 20:05:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 9725 transitions. [2020-04-18 20:05:42,075 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 9725 transitions. Word has length 38 [2020-04-18 20:05:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:42,076 INFO L479 AbstractCegarLoop]: Abstraction has 2961 states and 9725 transitions. [2020-04-18 20:05:42,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 9725 transitions. [2020-04-18 20:05:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:42,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:42,086 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 20:05:42,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 1 times [2020-04-18 20:05:42,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:42,089 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1410176174] [2020-04-18 20:05:42,091 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:42,101 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 20:05:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 20:05:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:42,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:42,107 INFO L82 PathProgramCache]: Analyzing trace with hash -185158389, now seen corresponding path program 2 times [2020-04-18 20:05:42,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:42,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989953728] [2020-04-18 20:05:42,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:42,419 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 20:05:42,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989953728] [2020-04-18 20:05:42,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:42,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:42,421 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:42,426 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:42,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 214 transitions. [2020-04-18 20:05:42,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:42,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:42,501 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 6 states. [2020-04-18 20:05:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:42,620 INFO L93 Difference]: Finished difference Result 214 states and 448 transitions. [2020-04-18 20:05:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions. [2020-04-18 20:05:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:42,622 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1314279643, now seen corresponding path program 3 times [2020-04-18 20:05:42,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:42,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265566741] [2020-04-18 20:05:42,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:42,734 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 20:05:42,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265566741] [2020-04-18 20:05:42,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:42,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:42,735 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:42,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:42,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 142 states and 263 transitions. [2020-04-18 20:05:42,777 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:43,089 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 20:05:43,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:43,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:43,090 INFO L87 Difference]: Start difference. First operand 214 states and 448 transitions. Second operand 15 states. [2020-04-18 20:05:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:43,651 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:43,653 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 4 times [2020-04-18 20:05:43,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:43,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420776235] [2020-04-18 20:05:43,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:43,797 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 20:05:43,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420776235] [2020-04-18 20:05:43,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:43,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:43,800 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:43,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:43,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 226 transitions. [2020-04-18 20:05:43,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:43,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 20:05:43,936 INFO L87 Difference]: Start difference. First operand 297 states and 559 transitions. Second operand 6 states. [2020-04-18 20:05:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:44,388 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:44,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:44,390 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1410176174] [2020-04-18 20:05:44,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:44,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:44,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1410176174] [2020-04-18 20:05:44,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 20:05:44,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:44,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 20:05:44,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 20:05:44,393 INFO L87 Difference]: Start difference. First operand 2961 states and 9725 transitions. Second operand 20 states. [2020-04-18 20:05:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:46,611 INFO L93 Difference]: Finished difference Result 7021 states and 22370 transitions. [2020-04-18 20:05:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 20:05:46,612 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-04-18 20:05:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:46,633 INFO L225 Difference]: With dead ends: 7021 [2020-04-18 20:05:46,633 INFO L226 Difference]: Without dead ends: 2804 [2020-04-18 20:05:46,636 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1641, Invalid=5669, Unknown=0, NotChecked=0, Total=7310 [2020-04-18 20:05:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-04-18 20:05:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2420. [2020-04-18 20:05:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-04-18 20:05:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 7709 transitions. [2020-04-18 20:05:46,733 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 7709 transitions. Word has length 41 [2020-04-18 20:05:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:46,733 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 7709 transitions. [2020-04-18 20:05:46,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 20:05:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 7709 transitions. [2020-04-18 20:05:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:46,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:46,740 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 20:05:46,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:46,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1211305480, now seen corresponding path program 1 times [2020-04-18 20:05:46,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:46,742 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [531758469] [2020-04-18 20:05:46,744 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:46,749 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 20:05:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 20:05:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:46,752 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:46,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:46,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1998542128, now seen corresponding path program 2 times [2020-04-18 20:05:46,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:46,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171134262] [2020-04-18 20:05:46,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:46,882 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 20:05:46,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171134262] [2020-04-18 20:05:46,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:46,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:46,883 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:46,887 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:46,902 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 225 transitions. [2020-04-18 20:05:46,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:46,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:46,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:46,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:46,936 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 6 states. [2020-04-18 20:05:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:47,046 INFO L93 Difference]: Finished difference Result 271 states and 594 transitions. [2020-04-18 20:05:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 594 transitions. [2020-04-18 20:05:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:47,047 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:47,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1692279434, now seen corresponding path program 3 times [2020-04-18 20:05:47,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:47,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671560469] [2020-04-18 20:05:47,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:47,156 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 20:05:47,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671560469] [2020-04-18 20:05:47,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:47,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:47,158 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:47,163 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:47,183 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 343 transitions. [2020-04-18 20:05:47,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:47,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 20:05:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 20:05:47,280 INFO L87 Difference]: Start difference. First operand 271 states and 594 transitions. Second operand 10 states. [2020-04-18 20:05:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:47,458 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:47,460 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:47,460 INFO L82 PathProgramCache]: Analyzing trace with hash -345747796, now seen corresponding path program 4 times [2020-04-18 20:05:47,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:47,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900701743] [2020-04-18 20:05:47,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:47,569 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 20:05:47,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900701743] [2020-04-18 20:05:47,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:47,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:47,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:47,573 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:47,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 275 transitions. [2020-04-18 20:05:47,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:47,700 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:47,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-04-18 20:05:47,701 INFO L87 Difference]: Start difference. First operand 396 states and 821 transitions. Second operand 6 states. [2020-04-18 20:05:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:47,819 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:47,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:47,822 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [531758469] [2020-04-18 20:05:47,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:47,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:47,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [531758469] [2020-04-18 20:05:47,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:47,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:05:47,824 INFO L87 Difference]: Start difference. First operand 2420 states and 7709 transitions. Second operand 15 states. [2020-04-18 20:05:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:48,616 INFO L93 Difference]: Finished difference Result 4070 states and 12511 transitions. [2020-04-18 20:05:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 20:05:48,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-04-18 20:05:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:48,636 INFO L225 Difference]: With dead ends: 4070 [2020-04-18 20:05:48,636 INFO L226 Difference]: Without dead ends: 2009 [2020-04-18 20:05:48,637 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=447, Invalid=1905, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 20:05:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-04-18 20:05:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1817. [2020-04-18 20:05:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-04-18 20:05:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 5534 transitions. [2020-04-18 20:05:48,695 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 5534 transitions. Word has length 42 [2020-04-18 20:05:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:48,696 INFO L479 AbstractCegarLoop]: Abstraction has 1817 states and 5534 transitions. [2020-04-18 20:05:48,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 5534 transitions. [2020-04-18 20:05:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:48,700 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:48,700 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:48,701 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:48,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1356091049, now seen corresponding path program 1 times [2020-04-18 20:05:48,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:48,702 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1171813590] [2020-04-18 20:05:48,703 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:48,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 908 transitions. [2020-04-18 20:05:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states. [2020-04-18 20:05:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:48,715 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:48,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:48,715 INFO L82 PathProgramCache]: Analyzing trace with hash -697482609, now seen corresponding path program 2 times [2020-04-18 20:05:48,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:48,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548285617] [2020-04-18 20:05:48,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:48,789 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 20:05:48,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548285617] [2020-04-18 20:05:48,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:48,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:48,791 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:48,794 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:48,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 198 transitions. [2020-04-18 20:05:48,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:48,837 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:48,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:48,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:48,838 INFO L87 Difference]: Start difference. First operand 381 states. Second operand 6 states. [2020-04-18 20:05:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:48,986 INFO L93 Difference]: Finished difference Result 441 states and 1036 transitions. [2020-04-18 20:05:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1036 transitions. [2020-04-18 20:05:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:48,988 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1003745303, now seen corresponding path program 3 times [2020-04-18 20:05:48,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:48,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464700003] [2020-04-18 20:05:48,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:49,056 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 20:05:49,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464700003] [2020-04-18 20:05:49,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:49,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:49,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:49,061 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:49,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 228 transitions. [2020-04-18 20:05:49,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:49,205 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 20:05:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:05:49,206 INFO L87 Difference]: Start difference. First operand 441 states and 1036 transitions. Second operand 11 states. [2020-04-18 20:05:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:49,420 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:49,422 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:49,423 INFO L82 PathProgramCache]: Analyzing trace with hash 219010221, now seen corresponding path program 4 times [2020-04-18 20:05:49,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:49,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355629060] [2020-04-18 20:05:49,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:49,512 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 20:05:49,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355629060] [2020-04-18 20:05:49,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:49,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:49,514 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:49,517 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:49,551 INFO L259 McrAutomatonBuilder]: Finished intersection with 189 states and 372 transitions. [2020-04-18 20:05:49,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:49,663 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-18 20:05:49,664 INFO L87 Difference]: Start difference. First operand 744 states and 1715 transitions. Second operand 6 states. [2020-04-18 20:05:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:49,837 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:49,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:49,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1171813590] [2020-04-18 20:05:49,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:49,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:49,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1171813590] [2020-04-18 20:05:49,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:05:49,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:05:49,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:05:49,841 INFO L87 Difference]: Start difference. First operand 1817 states and 5534 transitions. Second operand 16 states. [2020-04-18 20:05:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:50,464 INFO L93 Difference]: Finished difference Result 2510 states and 7532 transitions. [2020-04-18 20:05:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 20:05:50,464 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-04-18 20:05:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:50,474 INFO L225 Difference]: With dead ends: 2510 [2020-04-18 20:05:50,474 INFO L226 Difference]: Without dead ends: 1262 [2020-04-18 20:05:50,475 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 20:05:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-04-18 20:05:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1128. [2020-04-18 20:05:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-04-18 20:05:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3350 transitions. [2020-04-18 20:05:50,507 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3350 transitions. Word has length 44 [2020-04-18 20:05:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:50,508 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 3350 transitions. [2020-04-18 20:05:50,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:05:50,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3350 transitions. [2020-04-18 20:05:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:50,511 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:50,511 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 20:05:50,512 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash 479667934, now seen corresponding path program 1 times [2020-04-18 20:05:50,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:50,512 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1862305960] [2020-04-18 20:05:50,514 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:50,537 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 20:05:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 20:05:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:50,548 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:50,549 INFO L82 PathProgramCache]: Analyzing trace with hash 791367566, now seen corresponding path program 2 times [2020-04-18 20:05:50,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:50,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009174330] [2020-04-18 20:05:50,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:50,643 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 20:05:50,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009174330] [2020-04-18 20:05:50,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:50,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:50,645 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:50,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:50,672 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 334 transitions. [2020-04-18 20:05:50,673 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:50,772 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:05:50,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:50,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:50,772 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 8 states. [2020-04-18 20:05:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:51,389 INFO L93 Difference]: Finished difference Result 1748 states and 4915 transitions. [2020-04-18 20:05:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4915 transitions. [2020-04-18 20:05:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:51,393 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash -206686002, now seen corresponding path program 3 times [2020-04-18 20:05:51,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:51,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939640734] [2020-04-18 20:05:51,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:51,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939640734] [2020-04-18 20:05:51,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:51,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:51,469 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:51,472 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:51,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 787 transitions. [2020-04-18 20:05:51,536 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:51,560 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:51,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:51,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:05:51,561 INFO L87 Difference]: Start difference. First operand 1748 states and 4915 transitions. Second operand 6 states. [2020-04-18 20:05:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:51,684 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:51,689 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:51,689 INFO L82 PathProgramCache]: Analyzing trace with hash 381496398, now seen corresponding path program 4 times [2020-04-18 20:05:51,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:51,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179477465] [2020-04-18 20:05:51,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:51,788 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 20:05:51,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179477465] [2020-04-18 20:05:51,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:51,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:51,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:51,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:51,826 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 480 transitions. [2020-04-18 20:05:51,827 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:52,036 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:52,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:52,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-04-18 20:05:52,037 INFO L87 Difference]: Start difference. First operand 2032 states and 5647 transitions. Second operand 8 states. [2020-04-18 20:05:52,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:52,319 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:52,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:52,324 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1862305960] [2020-04-18 20:05:52,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:52,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:52,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1862305960] [2020-04-18 20:05:52,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:52,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:52,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:52,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:05:52,326 INFO L87 Difference]: Start difference. First operand 1128 states and 3350 transitions. Second operand 15 states. [2020-04-18 20:05:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:53,177 INFO L93 Difference]: Finished difference Result 1268 states and 3644 transitions. [2020-04-18 20:05:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 20:05:53,177 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-04-18 20:05:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:53,183 INFO L225 Difference]: With dead ends: 1268 [2020-04-18 20:05:53,184 INFO L226 Difference]: Without dead ends: 872 [2020-04-18 20:05:53,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=456, Invalid=2850, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 20:05:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-04-18 20:05:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 789. [2020-04-18 20:05:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-04-18 20:05:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2233 transitions. [2020-04-18 20:05:53,204 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2233 transitions. Word has length 46 [2020-04-18 20:05:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:53,205 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 2233 transitions. [2020-04-18 20:05:53,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2233 transitions. [2020-04-18 20:05:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:53,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:53,207 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 20:05:53,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash -103241697, now seen corresponding path program 1 times [2020-04-18 20:05:53,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:53,208 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1223156870] [2020-04-18 20:05:53,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:53,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 20:05:53,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 20:05:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:53,280 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:53,280 INFO L82 PathProgramCache]: Analyzing trace with hash 932076909, now seen corresponding path program 2 times [2020-04-18 20:05:53,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:53,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004341191] [2020-04-18 20:05:53,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:53,375 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 20:05:53,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004341191] [2020-04-18 20:05:53,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:53,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:53,377 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:53,381 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:53,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 418 transitions. [2020-04-18 20:05:53,414 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:53,477 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:05:53,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:53,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:53,478 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 20:05:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:54,025 INFO L93 Difference]: Finished difference Result 4326 states and 13428 transitions. [2020-04-18 20:05:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 13428 transitions. [2020-04-18 20:05:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:54,032 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash -65976659, now seen corresponding path program 3 times [2020-04-18 20:05:54,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:54,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370782435] [2020-04-18 20:05:54,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:54,105 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 20:05:54,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370782435] [2020-04-18 20:05:54,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:54,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:54,106 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:54,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:54,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 562 transitions. [2020-04-18 20:05:54,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:54,168 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:54,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:54,169 INFO L87 Difference]: Start difference. First operand 4326 states and 13428 transitions. Second operand 6 states. [2020-04-18 20:05:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:54,258 INFO L93 Difference]: Finished difference Result 5306 states and 16168 transitions. [2020-04-18 20:05:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 16168 transitions. [2020-04-18 20:05:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:54,266 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:54,266 INFO L82 PathProgramCache]: Analyzing trace with hash -195492887, now seen corresponding path program 4 times [2020-04-18 20:05:54,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:54,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322661005] [2020-04-18 20:05:54,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:54,353 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 20:05:54,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322661005] [2020-04-18 20:05:54,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:54,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:54,354 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:54,358 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:54,401 INFO L259 McrAutomatonBuilder]: Finished intersection with 253 states and 556 transitions. [2020-04-18 20:05:54,402 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:54,474 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:54,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-04-18 20:05:54,475 INFO L87 Difference]: Start difference. First operand 5306 states and 16168 transitions. Second operand 8 states. [2020-04-18 20:05:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:54,728 INFO L93 Difference]: Finished difference Result 7650 states and 22350 transitions. [2020-04-18 20:05:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 22350 transitions. [2020-04-18 20:05:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:54,739 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:05:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash 289841227, now seen corresponding path program 5 times [2020-04-18 20:05:54,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:54,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624073009] [2020-04-18 20:05:54,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:54,848 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 20:05:54,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624073009] [2020-04-18 20:05:54,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:54,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:54,850 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:54,856 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:55,020 INFO L259 McrAutomatonBuilder]: Finished intersection with 445 states and 1135 transitions. [2020-04-18 20:05:55,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:55,164 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 20:05:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 20:05:55,165 INFO L87 Difference]: Start difference. First operand 7650 states and 22350 transitions. Second operand 11 states. [2020-04-18 20:05:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:55,764 INFO L93 Difference]: Finished difference Result 8694 states and 25270 transitions. [2020-04-18 20:05:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 25270 transitions. [2020-04-18 20:05:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:55,777 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 20:05:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash -245301795, now seen corresponding path program 6 times [2020-04-18 20:05:55,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:55,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263360692] [2020-04-18 20:05:55,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:55,850 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 20:05:55,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263360692] [2020-04-18 20:05:55,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:55,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:55,852 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:55,856 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:55,933 INFO L259 McrAutomatonBuilder]: Finished intersection with 458 states and 1154 transitions. [2020-04-18 20:05:55,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:56,089 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 20:05:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=2102, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 20:05:56,091 INFO L87 Difference]: Start difference. First operand 8694 states and 25270 transitions. Second operand 10 states. [2020-04-18 20:05:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:56,373 INFO L93 Difference]: Finished difference Result 10658 states and 30842 transitions. [2020-04-18 20:05:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 30842 transitions. [2020-04-18 20:05:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:56,388 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 20:05:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1945469681, now seen corresponding path program 7 times [2020-04-18 20:05:56,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:56,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30493553] [2020-04-18 20:05:56,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:56,462 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 20:05:56,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30493553] [2020-04-18 20:05:56,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:56,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:56,463 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:56,467 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:56,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 519 transitions. [2020-04-18 20:05:56,492 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:56,688 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:56,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3120, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 20:05:56,689 INFO L87 Difference]: Start difference. First operand 10658 states and 30842 transitions. Second operand 8 states. [2020-04-18 20:05:56,934 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2020-04-18 20:05:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:57,201 INFO L93 Difference]: Finished difference Result 10786 states and 30962 transitions. [2020-04-18 20:05:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10786 states and 30962 transitions. [2020-04-18 20:05:57,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:57,214 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1223156870] [2020-04-18 20:05:57,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:57,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:57,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1223156870] [2020-04-18 20:05:57,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 20:05:57,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 20:05:57,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4154, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 20:05:57,217 INFO L87 Difference]: Start difference. First operand 789 states and 2233 transitions. Second operand 28 states. [2020-04-18 20:05:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:59,058 INFO L93 Difference]: Finished difference Result 1442 states and 4075 transitions. [2020-04-18 20:05:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-04-18 20:05:59,058 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-04-18 20:05:59,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:59,059 INFO L225 Difference]: With dead ends: 1442 [2020-04-18 20:05:59,059 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:05:59,062 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 413 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1674, Invalid=10316, Unknown=0, NotChecked=0, Total=11990 [2020-04-18 20:05:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:05:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:05:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:05:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:05:59,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 20:05:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:59,063 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:05:59,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 20:05:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:05:59,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:59,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:05:59 BasicIcfg [2020-04-18 20:05:59,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:05:59,070 INFO L168 Benchmark]: Toolchain (without parser) took 21724.49 ms. Allocated memory was 136.8 MB in the beginning and 741.3 MB in the end (delta: 604.5 MB). Free memory was 100.0 MB in the beginning and 288.7 MB in the end (delta: -188.7 MB). Peak memory consumption was 415.9 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,071 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.87 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 156.9 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.57 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,073 INFO L168 Benchmark]: Boogie Preprocessor took 28.46 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,073 INFO L168 Benchmark]: RCFGBuilder took 494.17 ms. Allocated memory is still 200.3 MB. Free memory was 153.2 MB in the beginning and 130.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,074 INFO L168 Benchmark]: TraceAbstraction took 20362.23 ms. Allocated memory was 200.3 MB in the beginning and 741.3 MB in the end (delta: 541.1 MB). Free memory was 130.3 MB in the beginning and 288.7 MB in the end (delta: -158.3 MB). Peak memory consumption was 382.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:59,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.87 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 156.9 MB in the end (delta: -58.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.57 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.46 ms. Allocated memory is still 200.3 MB. Free memory was 154.6 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.17 ms. Allocated memory is still 200.3 MB. Free memory was 153.2 MB in the beginning and 130.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20362.23 ms. Allocated memory was 200.3 MB in the beginning and 741.3 MB in the end (delta: 541.1 MB). Free memory was 130.3 MB in the beginning and 288.7 MB in the end (delta: -158.3 MB). Peak memory consumption was 382.7 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: 20.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 857 SDtfs, 2466 SDslu, 6024 SDs, 0 SdLazy, 1864 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1580 GetRequests, 1217 SyntacticMatches, 5 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8890 ImplicationChecksByTransitivity, 9.0s 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: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 2204 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...