/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:15:59,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:15:59,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:15:59,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:15:59,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:15:59,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:15:59,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:15:59,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:15:59,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:15:59,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:15:59,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:15:59,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:15:59,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:15:59,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:15:59,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:15:59,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:15:59,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:15:59,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:15:59,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:15:59,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:15:59,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:15:59,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:15:59,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:15:59,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:15:59,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:15:59,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:15:59,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:15:59,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:15:59,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:15:59,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:15:59,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:15:59,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:15:59,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:15:59,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:15:59,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:15:59,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:15:59,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:15:59,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:15:59,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:15:59,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:15:59,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:15:59,204 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-NoLbe-McrStrategy.epf [2020-04-18 16:15:59,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:15:59,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:15:59,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:15:59,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:15:59,221 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:15:59,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:15:59,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:15:59,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:15:59,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:15:59,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:15:59,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:15:59,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:15:59,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:15:59,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:15:59,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:15:59,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:15:59,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:15:59,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:15:59,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:15:59,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:15:59,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:15:59,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:15:59,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:15:59,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:15:59,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:15:59,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:15:59,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:15:59,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:15:59,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:15:59,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:15:59,534 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:15:59,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 16:15:59,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e772f8a96/c8d2098242d74392b7f77f0004916188/FLAG232699f8f [2020-04-18 16:16:00,240 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:16:00,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 16:16:00,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e772f8a96/c8d2098242d74392b7f77f0004916188/FLAG232699f8f [2020-04-18 16:16:00,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e772f8a96/c8d2098242d74392b7f77f0004916188 [2020-04-18 16:16:00,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:16:00,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:16:00,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:16:00,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:16:00,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:16:00,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:16:00" (1/1) ... [2020-04-18 16:16:00,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a4fbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:00, skipping insertion in model container [2020-04-18 16:16:00,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:16:00" (1/1) ... [2020-04-18 16:16:00,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:16:00,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:16:01,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:16:01,128 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:16:01,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:16:01,294 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:16:01,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01 WrapperNode [2020-04-18 16:16:01,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:16:01,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:16:01,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:16:01,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:16:01,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:16:01,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:16:01,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:16:01,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:16:01,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... [2020-04-18 16:16:01,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:16:01,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:16:01,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:16:01,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:16:01,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:16:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 16:16:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 16:16:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:16:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:16:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:16:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:16:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:16:01,449 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 16:16:01,842 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:16:01,843 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-04-18 16:16:01,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:16:01 BoogieIcfgContainer [2020-04-18 16:16:01,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:16:01,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:16:01,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:16:01,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:16:01,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:16:00" (1/3) ... [2020-04-18 16:16:01,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a2b999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:16:01, skipping insertion in model container [2020-04-18 16:16:01,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:16:01" (2/3) ... [2020-04-18 16:16:01,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a2b999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:16:01, skipping insertion in model container [2020-04-18 16:16:01,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:16:01" (3/3) ... [2020-04-18 16:16:01,856 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-04-18 16:16:01,867 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:16:01,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:16:01,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 16:16:01,876 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:16:01,900 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,901 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,901 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,901 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,902 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,906 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,907 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,907 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,907 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:16:01,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 16:16:01,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:16:01,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:16:01,941 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:16:01,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:16:01,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:16:01,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:16:01,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:16:01,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:16:01,960 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 82 transitions, 169 flow [2020-04-18 16:16:02,011 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 562 states. [2020-04-18 16:16:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 16:16:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:16:02,031 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:16:02,032 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:16:02,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:16:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1601843613, now seen corresponding path program 1 times [2020-04-18 16:16:02,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:16:02,048 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1872085853] [2020-04-18 16:16:02,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,079 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:16:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 16:16:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:16:02,083 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:16:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1601843613, now seen corresponding path program 2 times [2020-04-18 16:16:02,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:02,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530617490] [2020-04-18 16:16:02,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:02,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530617490] [2020-04-18 16:16:02,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:02,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 16:16:02,254 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:02,255 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,260 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:16:02,260 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:02,265 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:02,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 16:16:02,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 16:16:02,272 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-04-18 16:16:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,277 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-04-18 16:16:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-04-18 16:16:02,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:16:02,279 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1872085853] [2020-04-18 16:16:02,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:16:02,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 16:16:02,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1872085853] [2020-04-18 16:16:02,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 16:16:02,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:16:02,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 16:16:02,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 16:16:02,288 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 2 states. [2020-04-18 16:16:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,310 INFO L93 Difference]: Finished difference Result 331 states and 831 transitions. [2020-04-18 16:16:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 16:16:02,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-04-18 16:16:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:16:02,331 INFO L225 Difference]: With dead ends: 331 [2020-04-18 16:16:02,331 INFO L226 Difference]: Without dead ends: 331 [2020-04-18 16:16:02,334 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 16:16:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-04-18 16:16:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2020-04-18 16:16:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-04-18 16:16:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 831 transitions. [2020-04-18 16:16:02,422 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 831 transitions. Word has length 22 [2020-04-18 16:16:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:16:02,423 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 831 transitions. [2020-04-18 16:16:02,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 16:16:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 831 transitions. [2020-04-18 16:16:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:16:02,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:16:02,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:16:02,429 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:16:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash -950283557, now seen corresponding path program 1 times [2020-04-18 16:16:02,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:16:02,431 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1883611757] [2020-04-18 16:16:02,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:16:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 16:16:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:16:02,438 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:16:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -950283557, now seen corresponding path program 2 times [2020-04-18 16:16:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:02,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251277836] [2020-04-18 16:16:02,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:02,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251277836] [2020-04-18 16:16:02,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:02,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:02,552 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:02,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:16:02,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:02,570 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:02,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:02,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,571 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-04-18 16:16:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,580 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-04-18 16:16:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-04-18 16:16:02,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:16:02,581 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1883611757] [2020-04-18 16:16:02,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:16:02,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:16:02,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1883611757] [2020-04-18 16:16:02,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 16:16:02,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:16:02,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:02,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,583 INFO L87 Difference]: Start difference. First operand 331 states and 831 transitions. Second operand 3 states. [2020-04-18 16:16:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,621 INFO L93 Difference]: Finished difference Result 526 states and 1352 transitions. [2020-04-18 16:16:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 16:16:02,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-04-18 16:16:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:16:02,628 INFO L225 Difference]: With dead ends: 526 [2020-04-18 16:16:02,628 INFO L226 Difference]: Without dead ends: 526 [2020-04-18 16:16:02,630 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-18 16:16:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 348. [2020-04-18 16:16:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-04-18 16:16:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 874 transitions. [2020-04-18 16:16:02,669 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 874 transitions. Word has length 22 [2020-04-18 16:16:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:16:02,669 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 874 transitions. [2020-04-18 16:16:02,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 16:16:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 874 transitions. [2020-04-18 16:16:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 16:16:02,672 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:16:02,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:16:02,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:16:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash -260491045, now seen corresponding path program 1 times [2020-04-18 16:16:02,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:16:02,674 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1176150473] [2020-04-18 16:16:02,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-04-18 16:16:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-04-18 16:16:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 16:16:02,677 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:16:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash -260491045, now seen corresponding path program 2 times [2020-04-18 16:16:02,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:02,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900051328] [2020-04-18 16:16:02,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:02,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900051328] [2020-04-18 16:16:02,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:02,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:02,785 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:02,788 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-04-18 16:16:02,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:02,805 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:02,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:02,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,806 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-04-18 16:16:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,810 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-04-18 16:16:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-04-18 16:16:02,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:16:02,811 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1176150473] [2020-04-18 16:16:02,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:16:02,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:16:02,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1176150473] [2020-04-18 16:16:02,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 16:16:02,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:16:02,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,814 INFO L87 Difference]: Start difference. First operand 348 states and 874 transitions. Second operand 3 states. [2020-04-18 16:16:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:02,861 INFO L93 Difference]: Finished difference Result 494 states and 1265 transitions. [2020-04-18 16:16:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 16:16:02,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-04-18 16:16:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:16:02,870 INFO L225 Difference]: With dead ends: 494 [2020-04-18 16:16:02,870 INFO L226 Difference]: Without dead ends: 494 [2020-04-18 16:16:02,871 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-04-18 16:16:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 340. [2020-04-18 16:16:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-04-18 16:16:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 833 transitions. [2020-04-18 16:16:02,921 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 833 transitions. Word has length 26 [2020-04-18 16:16:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:16:02,922 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 833 transitions. [2020-04-18 16:16:02,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 16:16:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 833 transitions. [2020-04-18 16:16:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:02,925 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:16:02,925 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:16:02,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:16:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 111329482, now seen corresponding path program 1 times [2020-04-18 16:16:02,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:16:02,931 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1637076812] [2020-04-18 16:16:02,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:02,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 171 states and 305 transitions. [2020-04-18 16:16:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-04-18 16:16:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:02,946 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:16:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1426468516, now seen corresponding path program 2 times [2020-04-18 16:16:02,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:02,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613637178] [2020-04-18 16:16:02,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:03,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613637178] [2020-04-18 16:16:03,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:03,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:03,043 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:03,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:03,052 INFO L259 McrAutomatonBuilder]: Finished intersection with 87 states and 136 transitions. [2020-04-18 16:16:03,052 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:03,066 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:03,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:03,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:16:03,067 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-04-18 16:16:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:03,081 INFO L93 Difference]: Finished difference Result 174 states and 307 transitions. [2020-04-18 16:16:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 307 transitions. [2020-04-18 16:16:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:03,083 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:16:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:03,089 INFO L82 PathProgramCache]: Analyzing trace with hash 111329482, now seen corresponding path program 3 times [2020-04-18 16:16:03,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:03,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519157601] [2020-04-18 16:16:03,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:03,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519157601] [2020-04-18 16:16:03,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:03,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:03,172 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:03,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:03,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 100 transitions. [2020-04-18 16:16:03,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:03,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 16:16:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:03,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:16:03,195 INFO L87 Difference]: Start difference. First operand 174 states and 307 transitions. Second operand 3 states. [2020-04-18 16:16:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:03,209 INFO L93 Difference]: Finished difference Result 207 states and 358 transitions. [2020-04-18 16:16:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 358 transitions. [2020-04-18 16:16:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:03,210 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:16:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:03,211 INFO L82 PathProgramCache]: Analyzing trace with hash -778767356, now seen corresponding path program 4 times [2020-04-18 16:16:03,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:03,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657980131] [2020-04-18 16:16:03,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:03,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657980131] [2020-04-18 16:16:03,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:03,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:03,259 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:03,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:03,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 80 transitions. [2020-04-18 16:16:03,267 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:03,281 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:16:03,282 INFO L87 Difference]: Start difference. First operand 207 states and 358 transitions. Second operand 3 states. [2020-04-18 16:16:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:03,296 INFO L93 Difference]: Finished difference Result 252 states and 431 transitions. [2020-04-18 16:16:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 431 transitions. [2020-04-18 16:16:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:03,298 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 16:16:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:03,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1121917756, now seen corresponding path program 5 times [2020-04-18 16:16:03,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:03,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034216979] [2020-04-18 16:16:03,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:03,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034216979] [2020-04-18 16:16:03,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:03,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:03,379 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:03,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:03,387 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 76 transitions. [2020-04-18 16:16:03,387 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:03,398 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:16:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:16:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:16:03,399 INFO L87 Difference]: Start difference. First operand 252 states and 431 transitions. Second operand 3 states. [2020-04-18 16:16:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:03,411 INFO L93 Difference]: Finished difference Result 321 states and 528 transitions. [2020-04-18 16:16:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 528 transitions. [2020-04-18 16:16:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 16:16:03,412 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 16:16:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:16:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2028990246, now seen corresponding path program 6 times [2020-04-18 16:16:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:16:03,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737963129] [2020-04-18 16:16:03,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:16:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:16:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:16:03,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737963129] [2020-04-18 16:16:03,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:16:03,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:16:03,459 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:16:03,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:16:03,470 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 134 transitions. [2020-04-18 16:16:03,470 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:16:03,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 16:16:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:16:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:16:03,514 INFO L87 Difference]: Start difference. First operand 321 states and 528 transitions. Second operand 4 states. [2020-04-18 16:16:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:03,564 INFO L93 Difference]: Finished difference Result 361 states and 596 transitions. [2020-04-18 16:16:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 596 transitions. [2020-04-18 16:16:03,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:16:03,566 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1637076812] [2020-04-18 16:16:03,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:16:03,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:16:03,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1637076812] [2020-04-18 16:16:03,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 16:16:03,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:16:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 16:16:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:16:03,568 INFO L87 Difference]: Start difference. First operand 340 states and 833 transitions. Second operand 8 states. [2020-04-18 16:16:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:16:04,278 INFO L93 Difference]: Finished difference Result 470 states and 1079 transitions. [2020-04-18 16:16:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 16:16:04,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-04-18 16:16:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:16:04,279 INFO L225 Difference]: With dead ends: 470 [2020-04-18 16:16:04,279 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 16:16:04,280 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 16:16:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 16:16:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 16:16:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 16:16:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 16:16:04,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-04-18 16:16:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:16:04,281 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 16:16:04,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 16:16:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 16:16:04,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:16:04,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:16:04 BasicIcfg [2020-04-18 16:16:04,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 16:16:04,291 INFO L168 Benchmark]: Toolchain (without parser) took 3739.55 ms. Allocated memory was 134.7 MB in the beginning and 261.1 MB in the end (delta: 126.4 MB). Free memory was 96.9 MB in the beginning and 193.1 MB in the end (delta: -96.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,291 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 116.6 MB in the beginning and 116.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.69 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 95.1 MB in the beginning and 159.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.34 ms. Allocated memory is still 199.2 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,298 INFO L168 Benchmark]: Boogie Preprocessor took 29.66 ms. Allocated memory is still 199.2 MB. Free memory was 156.9 MB in the beginning and 155.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,298 INFO L168 Benchmark]: RCFGBuilder took 470.52 ms. Allocated memory is still 199.2 MB. Free memory was 155.4 MB in the beginning and 133.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,299 INFO L168 Benchmark]: TraceAbstraction took 2439.73 ms. Allocated memory was 199.2 MB in the beginning and 261.1 MB in the end (delta: 61.9 MB). Free memory was 133.1 MB in the beginning and 193.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:16:04,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 116.6 MB in the beginning and 116.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.69 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 95.1 MB in the beginning and 159.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.34 ms. Allocated memory is still 199.2 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.66 ms. Allocated memory is still 199.2 MB. Free memory was 156.9 MB in the beginning and 155.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.52 ms. Allocated memory is still 199.2 MB. Free memory was 155.4 MB in the beginning and 133.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2439.73 ms. Allocated memory was 199.2 MB in the beginning and 261.1 MB in the end (delta: 61.9 MB). Free memory was 133.1 MB in the beginning and 193.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 415 SDtfs, 235 SDslu, 578 SDs, 0 SdLazy, 404 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred 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, 4 MinimizatonAttempts, 332 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...