/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/thin001_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:28:07,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:28:07,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:28:07,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:28:07,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:28:07,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:28:07,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:28:07,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:28:07,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:28:07,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:28:07,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:28:07,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:28:07,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:28:07,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:28:07,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:28:07,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:28:07,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:28:07,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:28:07,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:28:07,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:28:07,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:28:07,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:28:07,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:28:07,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:28:07,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:28:07,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:28:07,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:28:07,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:28:07,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:28:07,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:28:07,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:28:07,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:28:07,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:28:07,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:28:07,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:28:07,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:28:07,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:28:07,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:28:07,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:28:07,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:28:07,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:28:07,573 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 11:28:07,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:28:07,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:28:07,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:28:07,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:28:07,600 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:28:07,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:28:07,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:28:07,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:28:07,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:28:07,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:28:07,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:28:07,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:28:07,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:28:07,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:28:07,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:28:07,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:28:07,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:28:07,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:28:07,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:28:07,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:28:07,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:28:07,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:28:07,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:28:07,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:28:07,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:28:07,605 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:28:07,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:28:07,606 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:28:07,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:28:07,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:28:07,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:28:07,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:28:07,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:28:07,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:28:07,909 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:28:07,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-18 11:28:07,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6395f60e2/b7eedf1947684c5ebe6a348e8d725bb4/FLAG12923a77c [2020-04-18 11:28:08,548 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:28:08,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-18 11:28:08,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6395f60e2/b7eedf1947684c5ebe6a348e8d725bb4/FLAG12923a77c [2020-04-18 11:28:08,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6395f60e2/b7eedf1947684c5ebe6a348e8d725bb4 [2020-04-18 11:28:08,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:28:08,856 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:28:08,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:28:08,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:28:08,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:28:08,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:28:08" (1/1) ... [2020-04-18 11:28:08,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f25ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:08, skipping insertion in model container [2020-04-18 11:28:08,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:28:08" (1/1) ... [2020-04-18 11:28:08,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:28:08,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:28:09,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:28:09,333 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:28:09,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:28:09,564 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:28:09,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09 WrapperNode [2020-04-18 11:28:09,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:28:09,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:28:09,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:28:09,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:28:09,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:28:09,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:28:09,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:28:09,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:28:09,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (1/1) ... [2020-04-18 11:28:09,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:28:09,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:28:09,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:28:09,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:28:09,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (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 11:28:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:28:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:28:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:28:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:28:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:28:09,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:28:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:28:09,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:28:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:28:09,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:28:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:28:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:28:09,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:28:09,715 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 11:28:10,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:28:10,117 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:28:10,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:28:10 BoogieIcfgContainer [2020-04-18 11:28:10,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:28:10,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:28:10,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:28:10,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:28:10,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:28:08" (1/3) ... [2020-04-18 11:28:10,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d418a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:28:10, skipping insertion in model container [2020-04-18 11:28:10,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:28:09" (2/3) ... [2020-04-18 11:28:10,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d418a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:28:10, skipping insertion in model container [2020-04-18 11:28:10,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:28:10" (3/3) ... [2020-04-18 11:28:10,132 INFO L109 eAbstractionObserver]: Analyzing ICFG thin001_pso.opt.i [2020-04-18 11:28:10,143 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:28:10,144 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:28:10,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:28:10,153 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:28:10,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,177 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,179 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,180 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,180 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,180 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,181 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,188 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,188 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,188 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,189 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,195 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,196 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,196 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,196 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,199 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,199 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,199 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,200 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:28:10,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:28:10,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:28:10,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:28:10,232 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:28:10,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:28:10,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:28:10,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:28:10,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:28:10,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:28:10,249 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:10,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:10,300 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:28:10,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:28:10,306 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 51 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 11:28:10,309 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:28:10,331 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:28:10,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:28:10,332 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 51 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 11:28:10,335 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:28:10,336 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:28:11,904 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:28:12,027 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 11:28:12,027 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:28:12,031 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:28:12,059 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:28:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:28:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:28:12,069 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:12,070 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:12,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 11:28:12,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:12,084 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1627193329] [2020-04-18 11:28:12,099 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,112 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:28:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:28:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:28:12,114 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,115 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 2 times [2020-04-18 11:28:12,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:12,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585451982] [2020-04-18 11:28:12,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:12,306 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 11:28:12,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585451982] [2020-04-18 11:28:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:12,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:28:12,311 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:12,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,319 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:28:12,319 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:12,324 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:28:12,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:28:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:28:12,331 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:28:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:12,336 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:28:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:28:12,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:12,337 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1627193329] [2020-04-18 11:28:12,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:12,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:28:12,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1627193329] [2020-04-18 11:28:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:28:12,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:28:12,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:28:12,346 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:28:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:12,380 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:28:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:28:12,384 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:28:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:12,419 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:28:12,422 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:28:12,428 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 11:28:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:28:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:28:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:28:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:28:12,518 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:28:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:12,519 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:28:12,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:28:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:28:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:28:12,521 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:12,521 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:12,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 11:28:12,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:12,522 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1649281846] [2020-04-18 11:28:12,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:28:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:28:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:28:12,524 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 2 times [2020-04-18 11:28:12,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:12,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709033008] [2020-04-18 11:28:12,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:12,673 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 11:28:12,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709033008] [2020-04-18 11:28:12,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:12,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:28:12,676 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:12,676 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,677 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:28:12,677 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:12,687 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:28:12,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:28:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:28:12,688 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 11:28:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:12,700 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:28:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:28:12,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:12,701 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1649281846] [2020-04-18 11:28:12,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:12,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:28:12,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1649281846] [2020-04-18 11:28:12,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:28:12,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:12,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:28:12,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:12,706 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 11:28:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:12,733 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 11:28:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:28:12,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:28:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:12,738 INFO L225 Difference]: With dead ends: 330 [2020-04-18 11:28:12,739 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 11:28:12,742 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 11:28:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 11:28:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 11:28:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 11:28:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 11:28:12,773 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 11:28:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:12,775 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 11:28:12,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:28:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 11:28:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:28:12,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:12,776 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:12,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:12,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-18 11:28:12,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:12,778 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1879445021] [2020-04-18 11:28:12,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,780 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 11:28:12,781 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:28:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:28:12,782 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 2 times [2020-04-18 11:28:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:12,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001653597] [2020-04-18 11:28:12,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:12,896 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 11:28:12,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001653597] [2020-04-18 11:28:12,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:12,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:28:12,898 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:12,899 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:12,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 11:28:12,900 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:12,942 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:28:12,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:28:12,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:28:12,943 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 7 states. [2020-04-18 11:28:12,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:12,972 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-04-18 11:28:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-04-18 11:28:12,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:12,973 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1879445021] [2020-04-18 11:28:12,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:12,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:28:12,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1879445021] [2020-04-18 11:28:12,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:28:12,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:28:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:28:12,975 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 7 states. [2020-04-18 11:28:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,102 INFO L93 Difference]: Finished difference Result 326 states and 882 transitions. [2020-04-18 11:28:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 11:28:13,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 11:28:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:13,104 INFO L225 Difference]: With dead ends: 326 [2020-04-18 11:28:13,105 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 11:28:13,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:28:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 11:28:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 11:28:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 11:28:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-04-18 11:28:13,121 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 10 [2020-04-18 11:28:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:13,121 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-04-18 11:28:13,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:28:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-04-18 11:28:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:28:13,126 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:13,126 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:13,126 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:13,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-18 11:28:13,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:13,129 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1850688460] [2020-04-18 11:28:13,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,131 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 84 transitions. [2020-04-18 11:28:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 11:28:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:28:13,132 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 2 times [2020-04-18 11:28:13,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:13,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717654884] [2020-04-18 11:28:13,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:13,214 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 11:28:13,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717654884] [2020-04-18 11:28:13,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:13,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:28:13,215 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:13,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-04-18 11:28:13,218 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:13,240 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:28:13,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:28:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:28:13,242 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-04-18 11:28:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,250 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-04-18 11:28:13,250 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 84 transitions. [2020-04-18 11:28:13,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:13,251 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1850688460] [2020-04-18 11:28:13,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:13,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:28:13,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1850688460] [2020-04-18 11:28:13,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:28:13,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:13,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:28:13,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:13,253 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-04-18 11:28:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,265 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-04-18 11:28:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:28:13,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:28:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:13,267 INFO L225 Difference]: With dead ends: 170 [2020-04-18 11:28:13,267 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 11:28:13,267 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:28:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 11:28:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 11:28:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 11:28:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-04-18 11:28:13,274 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-04-18 11:28:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:13,275 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-04-18 11:28:13,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:28:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-04-18 11:28:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:28:13,277 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:13,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:13,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-18 11:28:13,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:13,282 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1833598675] [2020-04-18 11:28:13,282 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 154 transitions. [2020-04-18 11:28:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 11:28:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:28:13,285 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2107764112, now seen corresponding path program 2 times [2020-04-18 11:28:13,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:13,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096205890] [2020-04-18 11:28:13,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:13,363 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 11:28:13,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096205890] [2020-04-18 11:28:13,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:13,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:13,364 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:13,365 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 74 transitions. [2020-04-18 11:28:13,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:13,386 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:28:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:28:13,387 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 5 states. [2020-04-18 11:28:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,448 INFO L93 Difference]: Finished difference Result 80 states and 169 transitions. [2020-04-18 11:28:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 169 transitions. [2020-04-18 11:28:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:28:13,449 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:28:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash 711924244, now seen corresponding path program 3 times [2020-04-18 11:28:13,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:13,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863584259] [2020-04-18 11:28:13,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:13,541 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 11:28:13,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863584259] [2020-04-18 11:28:13,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:13,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:13,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:13,544 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 11:28:13,548 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:13,565 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:28:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:28:13,566 INFO L87 Difference]: Start difference. First operand 80 states and 169 transitions. Second operand 5 states. [2020-04-18 11:28:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,590 INFO L93 Difference]: Finished difference Result 80 states and 169 transitions. [2020-04-18 11:28:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 169 transitions. [2020-04-18 11:28:13,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:13,593 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1833598675] [2020-04-18 11:28:13,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:13,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:28:13,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1833598675] [2020-04-18 11:28:13,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:28:13,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:28:13,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:28:13,595 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 7 states. [2020-04-18 11:28:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,653 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-04-18 11:28:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:28:13,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:28:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:13,655 INFO L225 Difference]: With dead ends: 176 [2020-04-18 11:28:13,655 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 11:28:13,656 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:28:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 11:28:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-18 11:28:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-18 11:28:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-18 11:28:13,661 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-18 11:28:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:13,661 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-18 11:28:13,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:28:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-18 11:28:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:13,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:28:13,662 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:28:13,662 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:28:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-18 11:28:13,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:28:13,663 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [83940655] [2020-04-18 11:28:13,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 240 transitions. [2020-04-18 11:28:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 11:28:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:13,667 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:28:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash 914224618, now seen corresponding path program 2 times [2020-04-18 11:28:13,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:13,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738043256] [2020-04-18 11:28:13,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:28:13,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738043256] [2020-04-18 11:28:13,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:13,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:28:13,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:13,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,743 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 97 transitions. [2020-04-18 11:28:13,743 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:13,806 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:28:13,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:28:13,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:28:13,807 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 7 states. [2020-04-18 11:28:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:13,872 INFO L93 Difference]: Finished difference Result 122 states and 282 transitions. [2020-04-18 11:28:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 282 transitions. [2020-04-18 11:28:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:13,874 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:28:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash 592861670, now seen corresponding path program 3 times [2020-04-18 11:28:13,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:13,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398145010] [2020-04-18 11:28:13,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:13,941 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 11:28:13,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398145010] [2020-04-18 11:28:13,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:13,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:28:13,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:13,944 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:13,948 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-04-18 11:28:13,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:13,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:28:13,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:28:13,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:28:13,970 INFO L87 Difference]: Start difference. First operand 122 states and 282 transitions. Second operand 5 states. [2020-04-18 11:28:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:14,012 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 11:28:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 11:28:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:28:14,013 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:28:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:28:14,014 INFO L82 PathProgramCache]: Analyzing trace with hash 567837230, now seen corresponding path program 4 times [2020-04-18 11:28:14,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:28:14,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861494381] [2020-04-18 11:28:14,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:28:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:28:14,096 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 11:28:14,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861494381] [2020-04-18 11:28:14,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:28:14,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:28:14,097 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:28:14,098 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:28:14,103 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 11:28:14,103 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:28:14,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:28:14,354 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:28:14,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:28:14,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:28:14,356 INFO L87 Difference]: Start difference. First operand 143 states and 309 transitions. Second operand 9 states. [2020-04-18 11:28:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:14,398 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 11:28:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 11:28:14,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:14,400 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [83940655] [2020-04-18 11:28:14,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:28:14,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:28:14,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [83940655] [2020-04-18 11:28:14,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:28:14,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:28:14,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:28:14,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:28:14,402 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 15 states. [2020-04-18 11:28:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:28:14,736 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-18 11:28:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 11:28:14,737 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-04-18 11:28:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:28:14,737 INFO L225 Difference]: With dead ends: 86 [2020-04-18 11:28:14,737 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:28:14,738 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 11:28:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:28:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:28:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:28:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:28:14,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 11:28:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:28:14,739 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:28:14,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:28:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:28:14,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:28:14,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:28:14 BasicIcfg [2020-04-18 11:28:14,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:28:14,746 INFO L168 Benchmark]: Toolchain (without parser) took 5910.75 ms. Allocated memory was 143.7 MB in the beginning and 304.6 MB in the end (delta: 161.0 MB). Free memory was 98.5 MB in the beginning and 157.7 MB in the end (delta: -59.2 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,747 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:28:14,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.48 ms. Allocated memory was 143.7 MB in the beginning and 224.4 MB in the end (delta: 80.7 MB). Free memory was 96.8 MB in the beginning and 189.9 MB in the end (delta: -93.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 224.4 MB. Free memory was 189.9 MB in the beginning and 187.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,749 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 224.4 MB. Free memory was 187.3 MB in the beginning and 186.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,750 INFO L168 Benchmark]: RCFGBuilder took 478.89 ms. Allocated memory is still 224.4 MB. Free memory was 186.0 MB in the beginning and 162.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,751 INFO L168 Benchmark]: TraceAbstraction took 4620.64 ms. Allocated memory was 224.4 MB in the beginning and 304.6 MB in the end (delta: 80.2 MB). Free memory was 162.9 MB in the beginning and 157.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:28:14,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.48 ms. Allocated memory was 143.7 MB in the beginning and 224.4 MB in the end (delta: 80.7 MB). Free memory was 96.8 MB in the beginning and 189.9 MB in the end (delta: -93.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 224.4 MB. Free memory was 189.9 MB in the beginning and 187.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 224.4 MB. Free memory was 187.3 MB in the beginning and 186.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.89 ms. Allocated memory is still 224.4 MB. Free memory was 186.0 MB in the beginning and 162.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4620.64 ms. Allocated memory was 224.4 MB in the beginning and 304.6 MB in the end (delta: 80.2 MB). Free memory was 162.9 MB in the beginning and 157.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2463 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: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 118 SDtfs, 319 SDslu, 289 SDs, 0 SdLazy, 207 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s 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, 6 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...