/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:04:46,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:04:46,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:04:46,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:04:46,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:04:46,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:04:46,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:04:46,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:04:46,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:04:46,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:04:46,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:04:46,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:04:46,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:04:46,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:04:46,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:04:46,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:04:46,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:04:46,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:04:46,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:04:46,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:04:46,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:04:46,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:04:46,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:04:46,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:04:46,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-12 00:04:46,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-12 00:04:46,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-12 00:04:46,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-12 00:04:46,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-12 00:04:46,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-12 00:04:46,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:04:46,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:04:46,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:04:46,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:04:46,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:04:46,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:04:46,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:04:46,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:04:46,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:04:46,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:04:46,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:04:46,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:04:46,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:04:46,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:04:46,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:04:46,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:04:46,621 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:04:46,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:04:46,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:04:46,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:04:46,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:04:46,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:04:46,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:04:46,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:04:46,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:04:46,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:04:46,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:04:46,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:04:46,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:04:46,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:04:46,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:04:46,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:04:46,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:04:46,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:04:46,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:04:46,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:04:46,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:04:46,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:04:46,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:04:46,627 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:04:46,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:04:46,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:04:46,628 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:04:47,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:04:47,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:04:47,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:04:47,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:04:47,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:04:47,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-09-12 00:04:47,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f16f731/4eb26ad5d60c41f2950d6f513cbcb3bb/FLAG9e399edf1 [2020-09-12 00:04:47,866 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:04:47,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-09-12 00:04:47,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f16f731/4eb26ad5d60c41f2950d6f513cbcb3bb/FLAG9e399edf1 [2020-09-12 00:04:48,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f16f731/4eb26ad5d60c41f2950d6f513cbcb3bb [2020-09-12 00:04:48,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:04:48,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:04:48,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:04:48,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:04:48,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:04:48,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:04:48" (1/1) ... [2020-09-12 00:04:48,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:48, skipping insertion in model container [2020-09-12 00:04:48,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:04:48" (1/1) ... [2020-09-12 00:04:48,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:04:48,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:04:48,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:04:48,868 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:04:48,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:04:49,025 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:04:49,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49 WrapperNode [2020-09-12 00:04:49,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:04:49,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:04:49,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:04:49,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:04:49,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:04:49,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:04:49,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:04:49,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:04:49,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... [2020-09-12 00:04:49,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:04:49,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:04:49,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:04:49,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:04:49,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:04:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:04:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:04:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:04:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:04:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:04:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:04:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:04:49,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:04:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:04:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:04:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:04:49,229 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:04:49,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:04:49,591 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:04:49,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:04:49 BoogieIcfgContainer [2020-09-12 00:04:49,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:04:49,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:04:49,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:04:49,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:04:49,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:04:48" (1/3) ... [2020-09-12 00:04:49,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb179a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:04:49, skipping insertion in model container [2020-09-12 00:04:49,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:04:49" (2/3) ... [2020-09-12 00:04:49,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb179a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:04:49, skipping insertion in model container [2020-09-12 00:04:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:04:49" (3/3) ... [2020-09-12 00:04:49,617 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-09-12 00:04:49,628 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:04:49,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:04:49,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:04:49,640 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:04:49,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:04:49,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-12 00:04:49,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:04:49,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:04:49,746 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:04:49,746 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:04:49,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:04:49,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:04:49,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:04:49,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:04:49,763 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-09-12 00:04:49,765 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-09-12 00:04:49,808 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-09-12 00:04:49,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:04:49,814 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-12 00:04:49,816 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-09-12 00:04:49,837 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-09-12 00:04:49,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:04:49,839 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-12 00:04:49,840 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-12 00:04:49,842 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:04:51,151 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-09-12 00:04:51,151 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-09-12 00:04:51,156 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-12 00:04:51,173 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-12 00:04:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-12 00:04:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-12 00:04:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:51,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-12 00:04:51,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:51,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-09-12 00:04:51,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:51,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005287724] [2020-09-12 00:04:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:51,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005287724] [2020-09-12 00:04:51,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:51,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:04:51,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1210438997] [2020-09-12 00:04:51,476 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:51,479 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:51,496 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-12 00:04:51,496 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:51,499 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:04:51,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:04:51,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:51,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:04:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:51,522 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-12 00:04:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:51,549 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-09-12 00:04:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:04:51,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-12 00:04:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:51,565 INFO L225 Difference]: With dead ends: 72 [2020-09-12 00:04:51,565 INFO L226 Difference]: Without dead ends: 56 [2020-09-12 00:04:51,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-12 00:04:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-12 00:04:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-12 00:04:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-09-12 00:04:51,616 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-09-12 00:04:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:51,617 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-09-12 00:04:51,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:04:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-09-12 00:04:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-12 00:04:51,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:51,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:04:51,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:04:51,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-09-12 00:04:51,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:51,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798733184] [2020-09-12 00:04:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:51,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798733184] [2020-09-12 00:04:51,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:51,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:04:51,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460812527] [2020-09-12 00:04:51,712 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:51,713 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:51,716 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-09-12 00:04:51,716 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:51,748 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:04:51,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:04:51,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:51,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:04:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:51,751 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-09-12 00:04:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:51,767 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-09-12 00:04:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:04:51,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-12 00:04:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:51,770 INFO L225 Difference]: With dead ends: 55 [2020-09-12 00:04:51,771 INFO L226 Difference]: Without dead ends: 55 [2020-09-12 00:04:51,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-12 00:04:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-12 00:04:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-12 00:04:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-09-12 00:04:51,781 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-09-12 00:04:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:51,781 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-09-12 00:04:51,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:04:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-09-12 00:04:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:04:51,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:04:51,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:04:51,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:51,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-09-12 00:04:51,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:51,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929373268] [2020-09-12 00:04:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:51,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929373268] [2020-09-12 00:04:51,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:51,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:04:51,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [545220829] [2020-09-12 00:04:51,897 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:51,898 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:51,900 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-09-12 00:04:51,900 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:51,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:04:51,971 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:04:52,008 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:04:52,016 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:04:52,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:04:52,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:52,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:04:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:04:52,018 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-09-12 00:04:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:52,053 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-09-12 00:04:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:04:52,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-12 00:04:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:52,055 INFO L225 Difference]: With dead ends: 56 [2020-09-12 00:04:52,055 INFO L226 Difference]: Without dead ends: 40 [2020-09-12 00:04:52,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:04:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-12 00:04:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-12 00:04:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-12 00:04:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-09-12 00:04:52,062 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-09-12 00:04:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:52,062 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-09-12 00:04:52,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:04:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-09-12 00:04:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:04:52,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:52,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:04:52,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:04:52,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-09-12 00:04:52,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:52,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693255975] [2020-09-12 00:04:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:52,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693255975] [2020-09-12 00:04:52,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:52,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:04:52,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [40522130] [2020-09-12 00:04:52,115 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:52,116 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:52,118 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-09-12 00:04:52,118 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:52,143 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:04:52,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:04:52,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:04:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:52,144 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-09-12 00:04:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:52,153 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-09-12 00:04:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:04:52,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:04:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:52,154 INFO L225 Difference]: With dead ends: 51 [2020-09-12 00:04:52,155 INFO L226 Difference]: Without dead ends: 41 [2020-09-12 00:04:52,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-12 00:04:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-12 00:04:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-12 00:04:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-09-12 00:04:52,160 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-09-12 00:04:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:52,161 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-09-12 00:04:52,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:04:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-09-12 00:04:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:04:52,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:52,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:04:52,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:04:52,162 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:52,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-09-12 00:04:52,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:52,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613522726] [2020-09-12 00:04:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:52,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613522726] [2020-09-12 00:04:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:52,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:04:52,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [768563689] [2020-09-12 00:04:52,208 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:52,209 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:52,210 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-12 00:04:52,210 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:52,210 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:04:52,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:04:52,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:04:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:52,211 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-09-12 00:04:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:52,226 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-09-12 00:04:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:04:52,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:04:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:52,227 INFO L225 Difference]: With dead ends: 42 [2020-09-12 00:04:52,227 INFO L226 Difference]: Without dead ends: 31 [2020-09-12 00:04:52,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:04:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-12 00:04:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-12 00:04:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-12 00:04:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-09-12 00:04:52,235 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-09-12 00:04:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:52,236 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-09-12 00:04:52,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:04:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-09-12 00:04:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:04:52,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:04:52,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:04:52,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:04:52,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:04:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:04:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-09-12 00:04:52,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:04:52,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016895246] [2020-09-12 00:04:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:04:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:04:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:04:52,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016895246] [2020-09-12 00:04:52,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:04:52,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:04:52,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1488315992] [2020-09-12 00:04:52,362 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:04:52,362 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:04:52,366 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-09-12 00:04:52,366 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:04:52,427 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [949#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:04:52,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:04:52,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:04:52,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:04:52,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:04:52,428 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 6 states. [2020-09-12 00:04:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:04:52,459 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-09-12 00:04:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:04:52,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-12 00:04:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:04:52,460 INFO L225 Difference]: With dead ends: 25 [2020-09-12 00:04:52,460 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:04:52,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:04:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:04:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:04:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:04:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:04:52,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-09-12 00:04:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:04:52,462 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:04:52,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:04:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:04:52,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:04:52,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:04:52,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:04:52 BasicIcfg [2020-09-12 00:04:52,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:04:52,470 INFO L168 Benchmark]: Toolchain (without parser) took 4347.15 ms. Allocated memory was 147.8 MB in the beginning and 245.4 MB in the end (delta: 97.5 MB). Free memory was 103.0 MB in the beginning and 125.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,471 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 899.87 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 162.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.83 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,473 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,474 INFO L168 Benchmark]: RCFGBuilder took 479.68 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 139.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,475 INFO L168 Benchmark]: TraceAbstraction took 2860.72 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 138.7 MB in the beginning and 125.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:04:52,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 899.87 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 162.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.83 ms. Allocated memory is still 204.5 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.68 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 139.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2860.72 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 138.7 MB in the beginning and 125.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 379 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 79 SDtfs, 27 SDslu, 69 SDs, 0 SdLazy, 41 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...