/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:57:09,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:57:09,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:57:09,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:57:09,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:57:09,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:57:09,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:57:09,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:57:09,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:57:09,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:57:09,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:57:09,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:57:09,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:57:09,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:57:09,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:57:09,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:57:09,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:57:09,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:57:09,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:57:09,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:57:09,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:57:09,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:57:09,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:57:09,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:57:09,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:57:09,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:57:09,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:57:09,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:57:09,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:57:09,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:57:09,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:57:09,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:57:09,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:57:09,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:57:09,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:57:09,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:57:09,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:57:09,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:57:09,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:57:09,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:57:09,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:57:09,593 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.epf [2020-04-17 21:57:09,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:57:09,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:57:09,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:57:09,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:57:09,620 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:57:09,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:57:09,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:57:09,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:57:09,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:57:09,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:57:09,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:57:09,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:57:09,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:57:09,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:57:09,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:57:09,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:57:09,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:57:09,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:57:09,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:57:09,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:57:09,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:57:09,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:57:09,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:57:09,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:57:09,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:57:09,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:57:09,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:57:09,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:57:09,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:57:09,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:57:09,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:57:09,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:57:09,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:57:09,905 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:57:09,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-17 21:57:09,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8030ef811/5ed88b204e79488db4b94aa29b80f0fb/FLAG380797414 [2020-04-17 21:57:10,520 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:57:10,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-17 21:57:10,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8030ef811/5ed88b204e79488db4b94aa29b80f0fb/FLAG380797414 [2020-04-17 21:57:10,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8030ef811/5ed88b204e79488db4b94aa29b80f0fb [2020-04-17 21:57:10,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:57:10,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:57:10,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:10,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:57:10,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:57:10,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:10" (1/1) ... [2020-04-17 21:57:10,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e49eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:10, skipping insertion in model container [2020-04-17 21:57:10,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:10" (1/1) ... [2020-04-17 21:57:10,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:57:10,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:57:11,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:11,365 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:57:11,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:11,499 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:57:11,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11 WrapperNode [2020-04-17 21:57:11,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:11,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:11,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:57:11,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:57:11,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:11,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:57:11,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:57:11,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:57:11,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (1/1) ... [2020-04-17 21:57:11,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:57:11,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:57:11,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:57:11,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:57:11,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (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 [2020-04-17 21:57:11,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:57:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:57:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:57:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:57:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:57:11,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:57:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:57:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:57:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:57:11,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:57:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:57:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:57:11,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:57:11,638 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:57:12,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:57:12,076 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:57:12,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:12 BoogieIcfgContainer [2020-04-17 21:57:12,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:57:12,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:57:12,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:57:12,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:57:12,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:57:10" (1/3) ... [2020-04-17 21:57:12,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:12, skipping insertion in model container [2020-04-17 21:57:12,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:11" (2/3) ... [2020-04-17 21:57:12,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:12, skipping insertion in model container [2020-04-17 21:57:12,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:12" (3/3) ... [2020-04-17 21:57:12,088 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-04-17 21:57:12,098 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:57:12,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:57:12,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:57:12,106 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:57:12,137 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,137 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,138 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,138 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,139 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,140 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,140 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,140 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,141 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,141 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,141 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,142 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,142 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,143 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,147 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,148 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,148 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,148 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,155 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,156 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,159 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,159 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:12,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:57:12,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:57:12,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:57:12,198 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:57:12,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:57:12,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:57:12,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:57:12,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:57:12,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:57:12,215 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 21:57:12,218 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:57:12,263 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:57:12,264 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:12,269 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:57:12,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:57:12,294 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:57:12,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:12,295 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:57:12,297 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:57:12,298 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:57:13,913 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-17 21:57:13,914 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 21:57:13,918 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 21:57:13,947 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 21:57:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 21:57:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:57:13,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:13,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:13,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:13,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-17 21:57:13,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:13,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589347868] [2020-04-17 21:57:13,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:14,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589347868] [2020-04-17 21:57:14,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:14,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:14,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324449331] [2020-04-17 21:57:14,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 21:57:14,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:14,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 21:57:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:57:14,253 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 21:57:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:14,302 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 21:57:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 21:57:14,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 21:57:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:14,347 INFO L225 Difference]: With dead ends: 362 [2020-04-17 21:57:14,348 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 21:57:14,351 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:57:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 21:57:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 21:57:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 21:57:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 21:57:14,462 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 21:57:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:14,463 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 21:57:14,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 21:57:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 21:57:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:57:14,466 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:14,466 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:14,466 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-17 21:57:14,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:14,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434805504] [2020-04-17 21:57:14,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:14,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434805504] [2020-04-17 21:57:14,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:14,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:14,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792851217] [2020-04-17 21:57:14,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:14,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:14,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:14,592 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 21:57:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:14,626 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 21:57:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:14,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:57:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:14,629 INFO L225 Difference]: With dead ends: 330 [2020-04-17 21:57:14,629 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 21:57:14,630 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 21:57:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 21:57:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 21:57:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 21:57:14,643 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 21:57:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:14,643 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 21:57:14,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 21:57:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:57:14,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:14,645 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:14,645 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:14,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:14,646 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-04-17 21:57:14,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:14,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640145609] [2020-04-17 21:57:14,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:14,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640145609] [2020-04-17 21:57:14,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:14,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:14,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223057535] [2020-04-17 21:57:14,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:14,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:14,737 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-17 21:57:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:14,767 INFO L93 Difference]: Finished difference Result 302 states and 818 transitions. [2020-04-17 21:57:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:14,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 21:57:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:14,770 INFO L225 Difference]: With dead ends: 302 [2020-04-17 21:57:14,770 INFO L226 Difference]: Without dead ends: 254 [2020-04-17 21:57:14,770 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-17 21:57:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-04-17 21:57:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-17 21:57:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-04-17 21:57:14,780 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-04-17 21:57:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:14,780 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-04-17 21:57:14,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-04-17 21:57:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:57:14,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:14,782 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:14,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-04-17 21:57:14,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:14,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132035772] [2020-04-17 21:57:14,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:14,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132035772] [2020-04-17 21:57:14,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:14,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:14,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397922143] [2020-04-17 21:57:14,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:14,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:14,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:14,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:14,857 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 4 states. [2020-04-17 21:57:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:14,881 INFO L93 Difference]: Finished difference Result 272 states and 732 transitions. [2020-04-17 21:57:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:14,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:57:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:14,883 INFO L225 Difference]: With dead ends: 272 [2020-04-17 21:57:14,883 INFO L226 Difference]: Without dead ends: 236 [2020-04-17 21:57:14,884 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-04-17 21:57:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-04-17 21:57:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-04-17 21:57:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 648 transitions. [2020-04-17 21:57:14,892 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 648 transitions. Word has length 11 [2020-04-17 21:57:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:14,892 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 648 transitions. [2020-04-17 21:57:14,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 648 transitions. [2020-04-17 21:57:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:57:14,894 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:14,894 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:14,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:14,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1801101265, now seen corresponding path program 1 times [2020-04-17 21:57:14,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:14,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858075617] [2020-04-17 21:57:14,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:14,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858075617] [2020-04-17 21:57:14,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:14,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:57:14,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968186452] [2020-04-17 21:57:14,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:14,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:14,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:14,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:14,941 INFO L87 Difference]: Start difference. First operand 236 states and 648 transitions. Second operand 4 states. [2020-04-17 21:57:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:14,984 INFO L93 Difference]: Finished difference Result 350 states and 913 transitions. [2020-04-17 21:57:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:14,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:57:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:14,987 INFO L225 Difference]: With dead ends: 350 [2020-04-17 21:57:14,987 INFO L226 Difference]: Without dead ends: 260 [2020-04-17 21:57:14,988 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-04-17 21:57:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2020-04-17 21:57:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-04-17 21:57:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 586 transitions. [2020-04-17 21:57:14,995 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 586 transitions. Word has length 12 [2020-04-17 21:57:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:14,996 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 586 transitions. [2020-04-17 21:57:14,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:14,996 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 586 transitions. [2020-04-17 21:57:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:57:14,997 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:14,997 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:14,998 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:14,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1802700369, now seen corresponding path program 1 times [2020-04-17 21:57:14,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:14,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654443246] [2020-04-17 21:57:14,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654443246] [2020-04-17 21:57:15,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:57:15,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56690021] [2020-04-17 21:57:15,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:57:15,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:57:15,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:15,090 INFO L87 Difference]: Start difference. First operand 224 states and 586 transitions. Second operand 6 states. [2020-04-17 21:57:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,200 INFO L93 Difference]: Finished difference Result 291 states and 731 transitions. [2020-04-17 21:57:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 21:57:15,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-17 21:57:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,202 INFO L225 Difference]: With dead ends: 291 [2020-04-17 21:57:15,202 INFO L226 Difference]: Without dead ends: 168 [2020-04-17 21:57:15,203 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 21:57:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-17 21:57:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-17 21:57:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-17 21:57:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 406 transitions. [2020-04-17 21:57:15,226 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 406 transitions. Word has length 12 [2020-04-17 21:57:15,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,227 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 406 transitions. [2020-04-17 21:57:15,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:57:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 406 transitions. [2020-04-17 21:57:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:57:15,227 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:15,228 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:15,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash 594574515, now seen corresponding path program 1 times [2020-04-17 21:57:15,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:15,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268109511] [2020-04-17 21:57:15,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268109511] [2020-04-17 21:57:15,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:57:15,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309035132] [2020-04-17 21:57:15,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:57:15,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:57:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:15,275 INFO L87 Difference]: Start difference. First operand 168 states and 406 transitions. Second operand 5 states. [2020-04-17 21:57:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,323 INFO L93 Difference]: Finished difference Result 211 states and 488 transitions. [2020-04-17 21:57:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:57:15,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:57:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,325 INFO L225 Difference]: With dead ends: 211 [2020-04-17 21:57:15,325 INFO L226 Difference]: Without dead ends: 92 [2020-04-17 21:57:15,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:57:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-17 21:57:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-17 21:57:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-17 21:57:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 194 transitions. [2020-04-17 21:57:15,328 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 194 transitions. Word has length 13 [2020-04-17 21:57:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,329 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 194 transitions. [2020-04-17 21:57:15,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:57:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 194 transitions. [2020-04-17 21:57:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:57:15,330 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:15,330 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:15,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -471367565, now seen corresponding path program 1 times [2020-04-17 21:57:15,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:15,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168555276] [2020-04-17 21:57:15,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168555276] [2020-04-17 21:57:15,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:57:15,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338988438] [2020-04-17 21:57:15,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:57:15,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:57:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:15,413 INFO L87 Difference]: Start difference. First operand 92 states and 194 transitions. Second operand 6 states. [2020-04-17 21:57:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,477 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-04-17 21:57:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:57:15,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 21:57:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,479 INFO L225 Difference]: With dead ends: 99 [2020-04-17 21:57:15,479 INFO L226 Difference]: Without dead ends: 82 [2020-04-17 21:57:15,479 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-04-17 21:57:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-17 21:57:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-17 21:57:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-17 21:57:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-04-17 21:57:15,483 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 14 [2020-04-17 21:57:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,483 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-04-17 21:57:15,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:57:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-04-17 21:57:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:57:15,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:15,484 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:15,484 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:15,484 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-04-17 21:57:15,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:15,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105906731] [2020-04-17 21:57:15,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105906731] [2020-04-17 21:57:15,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:57:15,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484066227] [2020-04-17 21:57:15,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:15,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:15,522 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2020-04-17 21:57:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,543 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-04-17 21:57:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:15,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 21:57:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,544 INFO L225 Difference]: With dead ends: 84 [2020-04-17 21:57:15,544 INFO L226 Difference]: Without dead ends: 70 [2020-04-17 21:57:15,544 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-17 21:57:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-04-17 21:57:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-04-17 21:57:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-04-17 21:57:15,547 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-04-17 21:57:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,547 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-04-17 21:57:15,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-04-17 21:57:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:57:15,548 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:15,548 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:15,548 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-04-17 21:57:15,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:15,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451143866] [2020-04-17 21:57:15,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451143866] [2020-04-17 21:57:15,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:57:15,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12901214] [2020-04-17 21:57:15,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:57:15,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:57:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:15,588 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2020-04-17 21:57:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,620 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-17 21:57:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:57:15,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 21:57:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,621 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:57:15,622 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 21:57:15,622 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 21:57:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 21:57:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 21:57:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-04-17 21:57:15,625 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-04-17 21:57:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,625 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-04-17 21:57:15,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:57:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-04-17 21:57:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 21:57:15,626 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:15,626 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:15,626 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-04-17 21:57:15,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:15,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665009552] [2020-04-17 21:57:15,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:57:15,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665009552] [2020-04-17 21:57:15,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:15,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 21:57:15,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229831305] [2020-04-17 21:57:15,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:57:15,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:57:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:15,684 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-04-17 21:57:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:15,711 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-04-17 21:57:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:57:15,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 21:57:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:15,712 INFO L225 Difference]: With dead ends: 46 [2020-04-17 21:57:15,713 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:57:15,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:57:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:57:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:57:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:57:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:57:15,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 21:57:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:15,714 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:57:15,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:57:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:57:15,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:57:15,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:57:15 BasicIcfg [2020-04-17 21:57:15,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:57:15,720 INFO L168 Benchmark]: Toolchain (without parser) took 4917.17 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 101.8 MB in the beginning and 137.8 MB in the end (delta: -36.0 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,721 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.55 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.92 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,724 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,724 INFO L168 Benchmark]: RCFGBuilder took 504.99 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 134.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,725 INFO L168 Benchmark]: TraceAbstraction took 3636.61 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 133.5 MB in the beginning and 137.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:15,729 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 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.55 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.92 ms. Allocated memory is still 202.9 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.99 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 134.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3636.61 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 133.5 MB in the beginning and 137.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 660 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 230 SDtfs, 254 SDslu, 351 SDs, 0 SdLazy, 148 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 5167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...