/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:34:04,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:34:04,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:34:04,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:34:04,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:34:04,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:34:04,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:34:04,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:34:04,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:34:04,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:34:04,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:34:04,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:34:04,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:34:04,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:34:04,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:34:04,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:34:04,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:34:04,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:34:04,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:34:04,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:34:04,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:34:04,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:34:04,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:34:04,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:34:04,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:34:04,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:34:04,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:34:04,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:34:04,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:34:04,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:34:04,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:34:04,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:34:04,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:34:04,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:34:04,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:34:04,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:34:04,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:34:04,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:34:04,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:34:04,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:34:04,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:34:04,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:34:04,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:34:04,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:34:04,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:34:04,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:34:04,662 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:34:04,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:34:04,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:34:04,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:34:04,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:34:04,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:34:04,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:34:04,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:34:04,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:34:04,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:34:04,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:34:04,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:34:04,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:34:04,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:34:04,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:34:04,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:34:04,666 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:34:04,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:34:04,667 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:34:04,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:34:04,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:34:04,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:34:04,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:34:05,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:34:05,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:34:05,003 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:34:05,004 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 10:34:05,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90fd586f/954f2a09ca874f2fb307336951fe1928/FLAGe31594919 [2020-04-18 10:34:05,576 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:34:05,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-18 10:34:05,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90fd586f/954f2a09ca874f2fb307336951fe1928/FLAGe31594919 [2020-04-18 10:34:05,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90fd586f/954f2a09ca874f2fb307336951fe1928 [2020-04-18 10:34:05,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:34:05,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:34:05,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:34:05,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:34:05,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:34:05,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:34:05" (1/1) ... [2020-04-18 10:34:05,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:05, skipping insertion in model container [2020-04-18 10:34:05,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:34:05" (1/1) ... [2020-04-18 10:34:05,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:34:06,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:34:06,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:34:06,580 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:34:06,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:34:06,709 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:34:06,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06 WrapperNode [2020-04-18 10:34:06,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:34:06,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:34:06,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:34:06,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:34:06,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:34:06,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:34:06,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:34:06,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:34:06,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... [2020-04-18 10:34:06,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:34:06,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:34:06,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:34:06,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:34:06,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:34:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:34:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:34:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:34:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:34:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:34:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:34:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:34:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:34:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:34:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:34:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:34:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:34:06,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:34:06,865 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 10:34:07,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:34:07,247 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:34:07,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:34:07 BoogieIcfgContainer [2020-04-18 10:34:07,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:34:07,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:34:07,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:34:07,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:34:07,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:34:05" (1/3) ... [2020-04-18 10:34:07,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b72793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:34:07, skipping insertion in model container [2020-04-18 10:34:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:34:06" (2/3) ... [2020-04-18 10:34:07,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b72793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:34:07, skipping insertion in model container [2020-04-18 10:34:07,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:34:07" (3/3) ... [2020-04-18 10:34:07,261 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-04-18 10:34:07,273 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:34:07,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:34:07,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:34:07,282 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:34:07,311 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,312 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,312 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,313 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,316 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,318 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,319 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,320 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,320 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,320 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,324 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,325 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,325 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,325 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,337 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,338 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,341 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,342 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:34:07,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:34:07,376 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:34:07,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:34:07,377 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:34:07,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:34:07,377 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:34:07,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:34:07,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:34:07,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:34:07,394 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:34:07,396 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:34:07,446 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:34:07,446 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:34:07,455 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:34:07,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:34:07,479 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:34:07,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:34:07,480 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:34:07,482 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:34:07,483 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:34:09,223 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 10:34:09,394 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 10:34:09,471 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 10:34:09,471 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 10:34:09,475 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:34:09,502 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:34:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:34:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:34:09,513 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:34:09,514 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:34:09,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:34:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:09,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 10:34:09,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:34:09,530 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1180658018] [2020-04-18 10:34:09,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:09,563 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:34:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:34:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:34:09,566 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:34:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 10:34:09,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:09,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772046925] [2020-04-18 10:34:09,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:09,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772046925] [2020-04-18 10:34:09,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:09,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:34:09,792 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:09,794 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:09,800 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:34:09,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:09,807 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:34:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:34:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:34:09,813 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:34:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:09,817 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:34:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:34:09,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:09,818 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1180658018] [2020-04-18 10:34:09,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:34:09,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:34:09,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1180658018] [2020-04-18 10:34:09,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:34:09,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:34:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:34:09,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:34:09,825 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:34:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:09,853 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:34:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:34:09,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:34:09,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:34:09,876 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:34:09,876 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:34:09,877 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:34:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:34:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:34:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:34:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:34:09,992 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:34:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:34:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:34:09,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:34:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:34:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:34:09,996 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:34:09,997 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:34:09,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:34:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-18 10:34:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:34:09,998 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1034612176] [2020-04-18 10:34:09,999 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:09,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:34:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:34:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:34:10,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:34:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 2 times [2020-04-18 10:34:10,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203282465] [2020-04-18 10:34:10,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:10,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203282465] [2020-04-18 10:34:10,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:10,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:10,122 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:10,123 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,125 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:34:10,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:10,141 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:34:10,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:34:10,142 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 10:34:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,158 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 10:34:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 10:34:10,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:10,159 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1034612176] [2020-04-18 10:34:10,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:34:10,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:34:10,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1034612176] [2020-04-18 10:34:10,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:34:10,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:34:10,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:34:10,162 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 10:34:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,198 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 10:34:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:34:10,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:34:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:34:10,201 INFO L225 Difference]: With dead ends: 242 [2020-04-18 10:34:10,201 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:34:10,204 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:34:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:34:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:34:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:34:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:34:10,227 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 10:34:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:34:10,227 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:34:10,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:34:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:34:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:34:10,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:34:10,233 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:34:10,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:34:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-18 10:34:10,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:34:10,234 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [704836409] [2020-04-18 10:34:10,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:34:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:34:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:34:10,240 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:34:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1380861297, now seen corresponding path program 2 times [2020-04-18 10:34:10,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105719064] [2020-04-18 10:34:10,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:10,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105719064] [2020-04-18 10:34:10,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:10,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:10,347 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:10,348 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,351 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 10:34:10,351 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:10,360 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:34:10,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:34:10,361 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 10:34:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,376 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:34:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:34:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:34:10,376 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:34:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 3 times [2020-04-18 10:34:10,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479527711] [2020-04-18 10:34:10,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:10,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479527711] [2020-04-18 10:34:10,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:10,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:10,446 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:10,447 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,450 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:34:10,450 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:10,468 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:34:10,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:34:10,469 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 10:34:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,510 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:34:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:34:10,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:10,511 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [704836409] [2020-04-18 10:34:10,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:34:10,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:34:10,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [704836409] [2020-04-18 10:34:10,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:34:10,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:34:10,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:34:10,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:34:10,516 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 6 states. [2020-04-18 10:34:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,606 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-04-18 10:34:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 10:34:10,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:34:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:34:10,610 INFO L225 Difference]: With dead ends: 182 [2020-04-18 10:34:10,610 INFO L226 Difference]: Without dead ends: 86 [2020-04-18 10:34:10,610 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:34:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-04-18 10:34:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-04-18 10:34:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 10:34:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-04-18 10:34:10,623 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 11 [2020-04-18 10:34:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:34:10,624 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-04-18 10:34:10,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:34:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-04-18 10:34:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:34:10,625 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:34:10,625 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:34:10,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:34:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,625 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 1 times [2020-04-18 10:34:10,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:34:10,626 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [317991078] [2020-04-18 10:34:10,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 189 transitions. [2020-04-18 10:34:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 10:34:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:34:10,637 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:34:10,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,638 INFO L82 PathProgramCache]: Analyzing trace with hash -117505074, now seen corresponding path program 2 times [2020-04-18 10:34:10,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063708315] [2020-04-18 10:34:10,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063708315] [2020-04-18 10:34:10,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:10,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:10,716 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:10,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 58 transitions. [2020-04-18 10:34:10,724 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:10,733 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:34:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:34:10,734 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-04-18 10:34:10,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,749 INFO L93 Difference]: Finished difference Result 89 states and 201 transitions. [2020-04-18 10:34:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 201 transitions. [2020-04-18 10:34:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:34:10,750 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:34:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 3 times [2020-04-18 10:34:10,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-18 10:34:10,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:10,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-18 10:34:10,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:10,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:10,781 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:10,782 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-04-18 10:34:10,787 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:10,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:34:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:34:10,832 INFO L87 Difference]: Start difference. First operand 89 states and 201 transitions. Second operand 4 states. [2020-04-18 10:34:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,854 INFO L93 Difference]: Finished difference Result 95 states and 208 transitions. [2020-04-18 10:34:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 208 transitions. [2020-04-18 10:34:10,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:10,855 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [317991078] [2020-04-18 10:34:10,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:34:10,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:34:10,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [317991078] [2020-04-18 10:34:10,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:34:10,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:34:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:34:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:34:10,857 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 6 states. [2020-04-18 10:34:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:10,911 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 10:34:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:34:10,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-18 10:34:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:34:10,913 INFO L225 Difference]: With dead ends: 82 [2020-04-18 10:34:10,913 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 10:34:10,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:34:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 10:34:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 10:34:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 10:34:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-18 10:34:10,923 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 13 [2020-04-18 10:34:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:34:10,925 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-18 10:34:10,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:34:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 10:34:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:34:10,926 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:34:10,926 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:34:10,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:34:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-04-18 10:34:10,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:34:10,928 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1523582251] [2020-04-18 10:34:10,929 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:10,932 INFO L259 McrAutomatonBuilder]: Finished intersection with 107 states and 270 transitions. [2020-04-18 10:34:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-04-18 10:34:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:34:10,940 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:34:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 2 times [2020-04-18 10:34:10,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:10,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599098411] [2020-04-18 10:34:10,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:11,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599098411] [2020-04-18 10:34:11,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:11,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:11,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:11,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:11,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2020-04-18 10:34:11,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:11,045 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:34:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:11,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:34:11,046 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2020-04-18 10:34:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:11,073 INFO L93 Difference]: Finished difference Result 125 states and 303 transitions. [2020-04-18 10:34:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 303 transitions. [2020-04-18 10:34:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:34:11,076 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:34:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 3 times [2020-04-18 10:34:11,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:11,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504694634] [2020-04-18 10:34:11,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:11,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504694634] [2020-04-18 10:34:11,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:11,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:11,138 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:11,139 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:11,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-04-18 10:34:11,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:11,153 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:34:11,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:11,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:34:11,154 INFO L87 Difference]: Start difference. First operand 125 states and 303 transitions. Second operand 4 states. [2020-04-18 10:34:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:11,182 INFO L93 Difference]: Finished difference Result 171 states and 388 transitions. [2020-04-18 10:34:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 388 transitions. [2020-04-18 10:34:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:34:11,183 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:34:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:34:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash -453593878, now seen corresponding path program 4 times [2020-04-18 10:34:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:34:11,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324367544] [2020-04-18 10:34:11,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:34:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:34:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:34:11,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324367544] [2020-04-18 10:34:11,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:34:11,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:34:11,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:34:11,251 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:34:11,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 10:34:11,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:34:11,275 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:34:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:34:11,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:34:11,276 INFO L87 Difference]: Start difference. First operand 171 states and 388 transitions. Second operand 4 states. [2020-04-18 10:34:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:11,293 INFO L93 Difference]: Finished difference Result 205 states and 441 transitions. [2020-04-18 10:34:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 441 transitions. [2020-04-18 10:34:11,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:11,294 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1523582251] [2020-04-18 10:34:11,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:34:11,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:34:11,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1523582251] [2020-04-18 10:34:11,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:34:11,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:34:11,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:34:11,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:34:11,296 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 7 states. [2020-04-18 10:34:11,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:34:11,366 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-18 10:34:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:34:11,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 10:34:11,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:34:11,366 INFO L225 Difference]: With dead ends: 74 [2020-04-18 10:34:11,367 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:34:11,367 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:34:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:34:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:34:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:34:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:34:11,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 10:34:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:34:11,368 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:34:11,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:34:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:34:11,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:34:11,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:34:11 BasicIcfg [2020-04-18 10:34:11,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:34:11,378 INFO L168 Benchmark]: Toolchain (without parser) took 5428.18 ms. Allocated memory was 137.9 MB in the beginning and 250.1 MB in the end (delta: 112.2 MB). Free memory was 100.6 MB in the beginning and 114.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,379 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.22 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 158.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,386 INFO L168 Benchmark]: Boogie Preprocessor took 27.72 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,390 INFO L168 Benchmark]: RCFGBuilder took 462.05 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 132.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,393 INFO L168 Benchmark]: TraceAbstraction took 4122.33 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 132.2 MB in the beginning and 114.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:34:11,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.22 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 158.6 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.72 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.05 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 132.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4122.33 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 132.2 MB in the beginning and 114.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 81 SDtfs, 143 SDslu, 128 SDs, 0 SdLazy, 52 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 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...