/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:45:08,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:45:08,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:45:08,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:45:08,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:45:08,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:45:08,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:45:08,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:45:08,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:45:08,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:45:08,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:45:08,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:45:08,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:45:08,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:45:08,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:45:08,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:45:08,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:45:08,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:45:08,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:45:08,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:45:08,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:45:08,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:45:08,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:45:08,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:45:08,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:45:08,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:45:08,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:45:08,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:45:08,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:45:08,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:45:08,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:45:08,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:45:08,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:45:08,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:45:08,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:45:08,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:45:08,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:45:08,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:45:08,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:45:08,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:45:08,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:45:08,090 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-VariableLbe-McrStrategy.epf [2020-04-18 15:45:08,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:45:08,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:45:08,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:45:08,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:45:08,130 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:45:08,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:45:08,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:45:08,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:45:08,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:45:08,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:45:08,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:45:08,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:45:08,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:45:08,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:45:08,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:45:08,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:45:08,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:45:08,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:45:08,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:45:08,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:45:08,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:45:08,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:45:08,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:45:08,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:45:08,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:45:08,444 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:45:08,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 15:45:08,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f72cc2f5/ca77e319aa20426f881b321d7c6c7ecf/FLAGf8ad0f01a [2020-04-18 15:45:09,078 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:45:09,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 15:45:09,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f72cc2f5/ca77e319aa20426f881b321d7c6c7ecf/FLAGf8ad0f01a [2020-04-18 15:45:09,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f72cc2f5/ca77e319aa20426f881b321d7c6c7ecf [2020-04-18 15:45:09,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:45:09,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:45:09,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:09,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:45:09,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:45:09,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:09" (1/1) ... [2020-04-18 15:45:09,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27931e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:09, skipping insertion in model container [2020-04-18 15:45:09,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:45:09" (1/1) ... [2020-04-18 15:45:09,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:45:09,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:45:09,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:09,927 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:45:10,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:45:10,083 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:45:10,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10 WrapperNode [2020-04-18 15:45:10,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:45:10,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:10,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:45:10,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:45:10,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:45:10,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:45:10,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:45:10,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:45:10,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (1/1) ... [2020-04-18 15:45:10,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:45:10,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:45:10,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:45:10,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:45:10,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (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 15:45:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:45:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:45:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:45:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:45:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:45:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:45:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:45:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:45:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:45:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:45:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:45:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:45:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:45:10,237 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 15:45:10,627 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:45:10,628 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:45:10,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:10 BoogieIcfgContainer [2020-04-18 15:45:10,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:45:10,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:45:10,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:45:10,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:45:10,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:45:09" (1/3) ... [2020-04-18 15:45:10,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36040419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:10, skipping insertion in model container [2020-04-18 15:45:10,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:45:10" (2/3) ... [2020-04-18 15:45:10,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36040419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:45:10, skipping insertion in model container [2020-04-18 15:45:10,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:45:10" (3/3) ... [2020-04-18 15:45:10,649 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2020-04-18 15:45:10,657 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:45:10,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:45:10,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:45:10,665 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:45:10,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,690 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,691 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,691 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,692 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,692 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,692 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,694 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,694 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,695 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,695 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,695 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,695 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,701 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,701 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,710 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,711 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,711 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,711 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,722 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,722 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:45:10,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:45:10,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:45:10,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:45:10,764 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:45:10,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:45:10,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:45:10,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:45:10,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:45:10,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:45:10,781 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:10,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:10,837 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:10,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:10,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:45:10,845 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:45:10,874 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:45:10,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:45:10,876 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:45:10,878 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:45:10,881 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:45:12,122 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 15:45:12,219 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 15:45:12,220 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 15:45:12,224 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 15:45:12,256 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 15:45:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 15:45:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:12,268 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:12,269 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:12,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,276 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 15:45:12,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:12,284 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [548621441] [2020-04-18 15:45:12,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,319 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:45:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:45:12,321 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 15:45:12,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:12,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875155709] [2020-04-18 15:45:12,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:12,481 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 15:45:12,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875155709] [2020-04-18 15:45:12,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:12,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:12,484 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:12,485 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,488 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:45:12,488 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:12,492 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:12,498 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:45:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:12,501 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:45:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:45:12,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:12,502 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [548621441] [2020-04-18 15:45:12,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:12,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [548621441] [2020-04-18 15:45:12,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:45:12,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:12,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:45:12,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:12,509 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 15:45:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:12,530 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 15:45:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:45:12,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:45:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:12,548 INFO L225 Difference]: With dead ends: 362 [2020-04-18 15:45:12,549 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 15:45:12,550 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:45:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 15:45:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 15:45:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 15:45:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 15:45:12,625 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 15:45:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:12,627 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 15:45:12,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:45:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 15:45:12,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:12,628 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:12,629 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:12,629 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,629 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 15:45:12,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:12,630 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [214731495] [2020-04-18 15:45:12,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,631 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:45:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:45:12,632 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 15:45:12,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:12,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041743052] [2020-04-18 15:45:12,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:12,727 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 15:45:12,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041743052] [2020-04-18 15:45:12,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:12,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:45:12,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:12,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:45:12,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:12,737 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:12,739 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 15:45:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:12,741 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:45:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:45:12,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:12,743 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [214731495] [2020-04-18 15:45:12,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:12,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:45:12,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [214731495] [2020-04-18 15:45:12,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:45:12,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:12,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:45:12,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:12,745 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 15:45:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:12,790 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 15:45:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:45:12,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:45:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:12,793 INFO L225 Difference]: With dead ends: 217 [2020-04-18 15:45:12,793 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 15:45:12,795 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:45:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 15:45:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 15:45:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 15:45:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 15:45:12,831 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 15:45:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:12,831 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 15:45:12,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:45:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 15:45:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:12,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:12,834 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:12,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 15:45:12,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:12,835 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1133735497] [2020-04-18 15:45:12,836 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 15:45:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:45:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:45:12,840 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 15:45:12,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:12,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788718248] [2020-04-18 15:45:12,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:12,948 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 15:45:12,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788718248] [2020-04-18 15:45:12,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:12,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:45:12,950 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:12,951 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:12,954 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 15:45:12,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:12,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:12,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:12,964 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 15:45:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:12,970 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 15:45:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 15:45:12,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:12,972 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1133735497] [2020-04-18 15:45:12,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:12,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:45:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1133735497] [2020-04-18 15:45:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:45:12,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:12,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:45:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:12,974 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 15:45:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,000 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 15:45:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:45:13,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:45:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:13,002 INFO L225 Difference]: With dead ends: 136 [2020-04-18 15:45:13,003 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 15:45:13,003 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:45:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 15:45:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 15:45:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 15:45:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 15:45:13,012 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 15:45:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:13,013 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 15:45:13,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:45:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 15:45:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:13,014 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:13,014 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:13,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 15:45:13,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:13,016 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [107065743] [2020-04-18 15:45:13,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 15:45:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 15:45:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:45:13,021 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,021 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 15:45:13,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:13,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573020376] [2020-04-18 15:45:13,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:13,103 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 15:45:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573020376] [2020-04-18 15:45:13,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:13,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:13,104 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:13,107 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,111 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:45:13,111 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:13,136 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:45:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:13,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:13,138 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 15:45:13,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,152 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 15:45:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 15:45:13,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:13,154 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [107065743] [2020-04-18 15:45:13,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:13,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:13,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [107065743] [2020-04-18 15:45:13,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:45:13,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:13,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:13,156 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 15:45:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,193 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 15:45:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:45:13,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 15:45:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:13,195 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:45:13,195 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 15:45:13,195 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 15:45:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 15:45:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 15:45:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 15:45:13,201 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 15:45:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:13,203 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 15:45:13,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:45:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 15:45:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:13,205 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:45:13,205 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:45:13,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:45:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 15:45:13,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:45:13,207 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2134427278] [2020-04-18 15:45:13,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,217 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 15:45:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:45:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:13,227 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:45:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 15:45:13,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:13,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965857504] [2020-04-18 15:45:13,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:13,361 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 15:45:13,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965857504] [2020-04-18 15:45:13,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:13,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:13,363 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:13,365 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 15:45:13,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:13,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:45:13,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:45:13,398 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 15:45:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,448 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 15:45:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 15:45:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:13,452 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:45:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 15:45:13,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:13,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209464220] [2020-04-18 15:45:13,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:13,529 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 15:45:13,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209464220] [2020-04-18 15:45:13,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:13,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:13,530 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:13,532 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 15:45:13,538 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:13,567 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:45:13,568 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 15:45:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,610 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 15:45:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 15:45:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:13,612 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:45:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 15:45:13,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:13,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768229465] [2020-04-18 15:45:13,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:13,688 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 15:45:13,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768229465] [2020-04-18 15:45:13,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:13,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:13,690 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:13,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 15:45:13,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:13,725 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:45:13,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:45:13,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:45:13,726 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 15:45:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:13,777 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 15:45:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 15:45:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:45:13,781 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:45:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:45:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 15:45:13,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:45:13,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554181509] [2020-04-18 15:45:13,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:45:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:45:13,859 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 15:45:13,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554181509] [2020-04-18 15:45:13,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:45:13,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:45:13,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:45:13,862 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:45:13,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 15:45:13,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:45:13,961 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:45:13,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:45:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:45:13,962 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 15:45:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:14,023 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 15:45:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 15:45:14,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:14,027 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2134427278] [2020-04-18 15:45:14,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:45:14,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:45:14,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2134427278] [2020-04-18 15:45:14,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 15:45:14,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:45:14,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 15:45:14,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:45:14,030 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 15:45:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:45:15,519 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 15:45:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 15:45:15,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 15:45:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:45:15,520 INFO L225 Difference]: With dead ends: 240 [2020-04-18 15:45:15,520 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:45:15,523 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 15:45:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:45:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:45:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:45:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:45:15,524 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:45:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:45:15,524 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:45:15,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 15:45:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:45:15,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:45:15,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:45:15 BasicIcfg [2020-04-18 15:45:15,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:45:15,530 INFO L168 Benchmark]: Toolchain (without parser) took 6135.17 ms. Allocated memory was 146.3 MB in the beginning and 284.7 MB in the end (delta: 138.4 MB). Free memory was 102.4 MB in the beginning and 111.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,531 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.44 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 160.6 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,533 INFO L168 Benchmark]: Boogie Preprocessor took 35.41 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,534 INFO L168 Benchmark]: RCFGBuilder took 469.21 ms. Allocated memory is still 203.9 MB. Free memory was 156.5 MB in the beginning and 134.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,535 INFO L168 Benchmark]: TraceAbstraction took 4887.68 ms. Allocated memory was 203.9 MB in the beginning and 284.7 MB in the end (delta: 80.7 MB). Free memory was 134.4 MB in the beginning and 111.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:45:15,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.44 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 160.6 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.29 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.41 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 157.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.21 ms. Allocated memory is still 203.9 MB. Free memory was 156.5 MB in the beginning and 134.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4887.68 ms. Allocated memory was 203.9 MB in the beginning and 284.7 MB in the end (delta: 80.7 MB). Free memory was 134.4 MB in the beginning and 111.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 640 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...