/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-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 04:26:14,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 04:26:14,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 04:26:14,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 04:26:14,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 04:26:14,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 04:26:14,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 04:26:14,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 04:26:14,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 04:26:14,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 04:26:14,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 04:26:14,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 04:26:14,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 04:26:14,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 04:26:14,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 04:26:14,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 04:26:14,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 04:26:14,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 04:26:14,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 04:26:14,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 04:26:14,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 04:26:14,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 04:26:14,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 04:26:14,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 04:26:14,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 04:26:14,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 04:26:14,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 04:26:14,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 04:26:14,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 04:26:14,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 04:26:14,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 04:26:14,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 04:26:14,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 04:26:14,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 04:26:14,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 04:26:14,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 04:26:14,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 04:26:14,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 04:26:14,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 04:26:14,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 04:26:14,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 04:26:14,353 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 [2019-12-27 04:26:14,367 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 04:26:14,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 04:26:14,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 04:26:14,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 04:26:14,369 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 04:26:14,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 04:26:14,369 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 04:26:14,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 04:26:14,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 04:26:14,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 04:26:14,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 04:26:14,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 04:26:14,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 04:26:14,371 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 04:26:14,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 04:26:14,371 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 04:26:14,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 04:26:14,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 04:26:14,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 04:26:14,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 04:26:14,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 04:26:14,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 04:26:14,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 04:26:14,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 04:26:14,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 04:26:14,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 04:26:14,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 04:26:14,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 04:26:14,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 04:26:14,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 04:26:14,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 04:26:14,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 04:26:14,656 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 04:26:14,657 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 04:26:14,657 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 04:26:14,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d2c69e8/02b47cb45fc8460caf36ebb7b8f86cde/FLAG2fda2b8ab [2019-12-27 04:26:15,278 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 04:26:15,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 04:26:15,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d2c69e8/02b47cb45fc8460caf36ebb7b8f86cde/FLAG2fda2b8ab [2019-12-27 04:26:15,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d2c69e8/02b47cb45fc8460caf36ebb7b8f86cde [2019-12-27 04:26:15,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 04:26:15,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 04:26:15,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 04:26:15,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 04:26:15,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 04:26:15,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:26:15" (1/1) ... [2019-12-27 04:26:15,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fae352c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:15, skipping insertion in model container [2019-12-27 04:26:15,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 04:26:15" (1/1) ... [2019-12-27 04:26:15,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 04:26:15,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 04:26:16,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:26:16,389 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 04:26:16,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 04:26:16,664 INFO L208 MainTranslator]: Completed translation [2019-12-27 04:26:16,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16 WrapperNode [2019-12-27 04:26:16,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 04:26:16,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 04:26:16,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 04:26:16,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 04:26:16,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 04:26:16,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 04:26:16,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 04:26:16,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 04:26:16,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (1/1) ... [2019-12-27 04:26:16,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 04:26:16,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 04:26:16,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 04:26:16,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 04:26:16,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (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 [2019-12-27 04:26:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 04:26:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 04:26:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 04:26:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-27 04:26:16,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-27 04:26:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 04:26:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 04:26:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 04:26:16,820 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 04:26:17,304 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 04:26:17,305 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 04:26:17,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:26:17 BoogieIcfgContainer [2019-12-27 04:26:17,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 04:26:17,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 04:26:17,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 04:26:17,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 04:26:17,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 04:26:15" (1/3) ... [2019-12-27 04:26:17,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e6886a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:26:17, skipping insertion in model container [2019-12-27 04:26:17,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 04:26:16" (2/3) ... [2019-12-27 04:26:17,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e6886a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 04:26:17, skipping insertion in model container [2019-12-27 04:26:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 04:26:17" (3/3) ... [2019-12-27 04:26:17,313 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-27 04:26:17,322 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 04:26:17,322 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 04:26:17,330 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 04:26:17,331 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 04:26:17,361 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,361 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,362 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,362 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,363 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,363 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,364 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,364 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,365 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,365 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,365 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,365 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,366 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,366 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,366 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,367 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,367 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,367 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,367 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,368 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,368 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,372 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,373 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,373 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,373 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,373 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,374 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,374 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,374 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 04:26:17,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 04:26:17,421 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 04:26:17,421 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 04:26:17,421 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 04:26:17,421 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 04:26:17,422 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 04:26:17,422 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 04:26:17,422 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 04:26:17,422 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 04:26:17,437 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions [2019-12-27 04:26:17,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 04:26:17,489 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 04:26:17,490 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 04:26:17,496 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-27 04:26:17,499 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 04:26:17,523 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 04:26:17,524 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 04:26:17,525 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-27 04:26:17,527 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2019-12-27 04:26:17,528 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 04:26:18,970 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-27 04:26:19,223 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-27 04:26:19,801 WARN L192 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-27 04:26:20,046 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-27 04:26:20,501 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-27 04:26:20,866 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-27 04:26:22,086 WARN L192 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2019-12-27 04:26:22,548 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-27 04:26:22,551 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2019-12-27 04:26:22,551 INFO L214 etLargeBlockEncoding]: Total number of compositions: 77 [2019-12-27 04:26:22,555 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-27 04:26:22,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2019-12-27 04:26:22,566 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-27 04:26:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 04:26:22,573 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:22,574 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:22,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1101690005, now seen corresponding path program 1 times [2019-12-27 04:26:22,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:22,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486015042] [2019-12-27 04:26:22,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:22,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486015042] [2019-12-27 04:26:22,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:26:22,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:26:22,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452092993] [2019-12-27 04:26:22,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:26:22,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:26:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:26:22,845 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-27 04:26:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:22,891 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2019-12-27 04:26:22,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:26:22,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 04:26:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:22,902 INFO L225 Difference]: With dead ends: 20 [2019-12-27 04:26:22,903 INFO L226 Difference]: Without dead ends: 20 [2019-12-27 04:26:22,904 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:26:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-27 04:26:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-27 04:26:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-27 04:26:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2019-12-27 04:26:22,934 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2019-12-27 04:26:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:22,935 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2019-12-27 04:26:22,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:26:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2019-12-27 04:26:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 04:26:22,936 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:22,936 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:22,936 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:22,937 INFO L82 PathProgramCache]: Analyzing trace with hash -176981712, now seen corresponding path program 1 times [2019-12-27 04:26:22,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:22,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179103270] [2019-12-27 04:26:22,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:26:23,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179103270] [2019-12-27 04:26:23,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 04:26:23,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 04:26:23,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365294619] [2019-12-27 04:26:23,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 04:26:23,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:23,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 04:26:23,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:26:23,060 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2019-12-27 04:26:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:23,074 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2019-12-27 04:26:23,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 04:26:23,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 04:26:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:23,076 INFO L225 Difference]: With dead ends: 28 [2019-12-27 04:26:23,076 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 04:26:23,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 04:26:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 04:26:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-27 04:26:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-27 04:26:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2019-12-27 04:26:23,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2019-12-27 04:26:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:23,083 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2019-12-27 04:26:23,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 04:26:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2019-12-27 04:26:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 04:26:23,084 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:23,084 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:23,084 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1360713053, now seen corresponding path program 1 times [2019-12-27 04:26:23,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:23,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027888005] [2019-12-27 04:26:23,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:23,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027888005] [2019-12-27 04:26:23,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315436309] [2019-12-27 04:26:23,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:23,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 04:26:23,297 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:26:23,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:23,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 04:26:23,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199574535] [2019-12-27 04:26:23,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 04:26:23,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:23,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 04:26:23,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-27 04:26:23,332 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 8 states. [2019-12-27 04:26:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:23,588 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2019-12-27 04:26:23,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-27 04:26:23,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-27 04:26:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:23,590 INFO L225 Difference]: With dead ends: 64 [2019-12-27 04:26:23,590 INFO L226 Difference]: Without dead ends: 64 [2019-12-27 04:26:23,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2019-12-27 04:26:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-27 04:26:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-12-27 04:26:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-27 04:26:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2019-12-27 04:26:23,599 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 11 [2019-12-27 04:26:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:23,599 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2019-12-27 04:26:23,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 04:26:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2019-12-27 04:26:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 04:26:23,600 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:23,600 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:23,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:23,804 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632394, now seen corresponding path program 2 times [2019-12-27 04:26:23,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:23,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948129367] [2019-12-27 04:26:23,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:23,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948129367] [2019-12-27 04:26:23,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173995534] [2019-12-27 04:26:23,936 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:24,018 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 04:26:24,019 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:24,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:26:24,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 04:26:24,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:24,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-12-27 04:26:24,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330770432] [2019-12-27 04:26:24,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 04:26:24,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:24,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 04:26:24,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-27 04:26:24,062 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand 11 states. [2019-12-27 04:26:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:24,605 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2019-12-27 04:26:24,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-27 04:26:24,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-27 04:26:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:24,609 INFO L225 Difference]: With dead ends: 112 [2019-12-27 04:26:24,609 INFO L226 Difference]: Without dead ends: 112 [2019-12-27 04:26:24,613 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=445, Invalid=1037, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 04:26:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-27 04:26:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 40. [2019-12-27 04:26:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-27 04:26:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2019-12-27 04:26:24,632 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 13 [2019-12-27 04:26:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:24,632 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2019-12-27 04:26:24,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 04:26:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2019-12-27 04:26:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 04:26:24,633 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:24,633 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:24,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:24,845 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1552984073, now seen corresponding path program 3 times [2019-12-27 04:26:24,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:24,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652071286] [2019-12-27 04:26:24,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:24,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652071286] [2019-12-27 04:26:24,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137037528] [2019-12-27 04:26:24,969 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:25,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-27 04:26:25,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:25,042 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 04:26:25,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 04:26:25,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:25,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2019-12-27 04:26:25,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424283062] [2019-12-27 04:26:25,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 04:26:25,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 04:26:25,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-27 04:26:25,085 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 12 states. [2019-12-27 04:26:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:25,700 INFO L93 Difference]: Finished difference Result 200 states and 392 transitions. [2019-12-27 04:26:25,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-27 04:26:25,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-12-27 04:26:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:25,703 INFO L225 Difference]: With dead ends: 200 [2019-12-27 04:26:25,703 INFO L226 Difference]: Without dead ends: 196 [2019-12-27 04:26:25,704 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 04:26:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-27 04:26:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 65. [2019-12-27 04:26:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-27 04:26:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 135 transitions. [2019-12-27 04:26:25,715 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 135 transitions. Word has length 15 [2019-12-27 04:26:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:25,715 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 135 transitions. [2019-12-27 04:26:25,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 04:26:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 135 transitions. [2019-12-27 04:26:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 04:26:25,716 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:25,717 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:25,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:25,921 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash -867499506, now seen corresponding path program 4 times [2019-12-27 04:26:25,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:25,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373405034] [2019-12-27 04:26:25,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:26,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373405034] [2019-12-27 04:26:26,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698491190] [2019-12-27 04:26:26,014 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:26,077 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 04:26:26,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:26,078 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:26:26,080 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-27 04:26:26,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:26,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-27 04:26:26,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146754888] [2019-12-27 04:26:26,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 04:26:26,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:26,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 04:26:26,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-12-27 04:26:26,118 INFO L87 Difference]: Start difference. First operand 65 states and 135 transitions. Second operand 15 states. [2019-12-27 04:26:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:27,288 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2019-12-27 04:26:27,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-12-27 04:26:27,289 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-12-27 04:26:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:27,291 INFO L225 Difference]: With dead ends: 235 [2019-12-27 04:26:27,291 INFO L226 Difference]: Without dead ends: 235 [2019-12-27 04:26:27,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1720, Invalid=4442, Unknown=0, NotChecked=0, Total=6162 [2019-12-27 04:26:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-27 04:26:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 59. [2019-12-27 04:26:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-27 04:26:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2019-12-27 04:26:27,304 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 16 [2019-12-27 04:26:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:27,304 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2019-12-27 04:26:27,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 04:26:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2019-12-27 04:26:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-27 04:26:27,305 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:27,306 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:27,509 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:27,509 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:27,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2055665343, now seen corresponding path program 5 times [2019-12-27 04:26:27,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:27,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684508158] [2019-12-27 04:26:27,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:27,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684508158] [2019-12-27 04:26:27,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102008132] [2019-12-27 04:26:27,666 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:27,753 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 04:26:27,753 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:27,754 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 04:26:27,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-27 04:26:27,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:27,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2019-12-27 04:26:27,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050563353] [2019-12-27 04:26:27,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-27 04:26:27,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:27,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-27 04:26:27,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-27 04:26:27,870 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 16 states. [2019-12-27 04:26:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:29,219 INFO L93 Difference]: Finished difference Result 397 states and 785 transitions. [2019-12-27 04:26:29,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-27 04:26:29,220 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-12-27 04:26:29,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:29,237 INFO L225 Difference]: With dead ends: 397 [2019-12-27 04:26:29,237 INFO L226 Difference]: Without dead ends: 391 [2019-12-27 04:26:29,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1775, Invalid=4705, Unknown=0, NotChecked=0, Total=6480 [2019-12-27 04:26:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-27 04:26:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 100. [2019-12-27 04:26:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-27 04:26:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 211 transitions. [2019-12-27 04:26:29,259 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 211 transitions. Word has length 18 [2019-12-27 04:26:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:29,259 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 211 transitions. [2019-12-27 04:26:29,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-27 04:26:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 211 transitions. [2019-12-27 04:26:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 04:26:29,261 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:29,261 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:29,462 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:29,462 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:29,463 INFO L82 PathProgramCache]: Analyzing trace with hash 729250308, now seen corresponding path program 6 times [2019-12-27 04:26:29,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:29,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528218960] [2019-12-27 04:26:29,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:29,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528218960] [2019-12-27 04:26:29,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41870673] [2019-12-27 04:26:29,611 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:29,697 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 04:26:29,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:29,699 INFO L264 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:26:29,700 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 04:26:29,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:29,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2019-12-27 04:26:29,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893875176] [2019-12-27 04:26:29,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-27 04:26:29,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:29,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-27 04:26:29,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-27 04:26:29,780 INFO L87 Difference]: Start difference. First operand 100 states and 211 transitions. Second operand 19 states. [2019-12-27 04:26:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:32,996 INFO L93 Difference]: Finished difference Result 451 states and 898 transitions. [2019-12-27 04:26:32,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-12-27 04:26:32,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-12-27 04:26:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:33,000 INFO L225 Difference]: With dead ends: 451 [2019-12-27 04:26:33,000 INFO L226 Difference]: Without dead ends: 451 [2019-12-27 04:26:33,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8907 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5119, Invalid=14063, Unknown=0, NotChecked=0, Total=19182 [2019-12-27 04:26:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-12-27 04:26:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 82. [2019-12-27 04:26:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-27 04:26:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-27 04:26:33,031 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2019-12-27 04:26:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:33,031 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-27 04:26:33,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-27 04:26:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-27 04:26:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-27 04:26:33,035 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:33,036 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:33,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:33,236 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1093713423, now seen corresponding path program 7 times [2019-12-27 04:26:33,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:33,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703137020] [2019-12-27 04:26:33,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:33,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703137020] [2019-12-27 04:26:33,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801275621] [2019-12-27 04:26:33,395 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:33,459 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 04:26:33,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 04:26:33,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:33,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2019-12-27 04:26:33,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619435677] [2019-12-27 04:26:33,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 04:26:33,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 04:26:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-27 04:26:33,544 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 22 states. [2019-12-27 04:26:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:37,858 INFO L93 Difference]: Finished difference Result 639 states and 1274 transitions. [2019-12-27 04:26:37,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-12-27 04:26:37,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-27 04:26:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:37,864 INFO L225 Difference]: With dead ends: 639 [2019-12-27 04:26:37,864 INFO L226 Difference]: Without dead ends: 639 [2019-12-27 04:26:37,872 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19012 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=10080, Invalid=28140, Unknown=0, NotChecked=0, Total=38220 [2019-12-27 04:26:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-12-27 04:26:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 94. [2019-12-27 04:26:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-27 04:26:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2019-12-27 04:26:37,881 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 21 [2019-12-27 04:26:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:37,882 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2019-12-27 04:26:37,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 04:26:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2019-12-27 04:26:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 04:26:37,883 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:37,883 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:38,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:38,088 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash -615202146, now seen corresponding path program 8 times [2019-12-27 04:26:38,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:38,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908895671] [2019-12-27 04:26:38,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:38,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908895671] [2019-12-27 04:26:38,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793109731] [2019-12-27 04:26:38,251 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:38,323 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 04:26:38,324 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:38,325 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 04:26:38,326 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 04:26:38,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:38,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2019-12-27 04:26:38,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881832521] [2019-12-27 04:26:38,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-27 04:26:38,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:38,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-27 04:26:38,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2019-12-27 04:26:38,447 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand 25 states. [2019-12-27 04:26:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:45,459 INFO L93 Difference]: Finished difference Result 869 states and 1734 transitions. [2019-12-27 04:26:45,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-12-27 04:26:45,459 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 23 [2019-12-27 04:26:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:45,464 INFO L225 Difference]: With dead ends: 869 [2019-12-27 04:26:45,465 INFO L226 Difference]: Without dead ends: 869 [2019-12-27 04:26:45,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36612 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=18334, Invalid=51626, Unknown=0, NotChecked=0, Total=69960 [2019-12-27 04:26:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-12-27 04:26:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 106. [2019-12-27 04:26:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-27 04:26:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2019-12-27 04:26:45,482 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 23 [2019-12-27 04:26:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:45,483 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2019-12-27 04:26:45,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-27 04:26:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2019-12-27 04:26:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 04:26:45,485 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:45,485 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:45,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:45,689 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash -327365621, now seen corresponding path program 9 times [2019-12-27 04:26:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:45,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129535001] [2019-12-27 04:26:45,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:45,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129535001] [2019-12-27 04:26:45,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129569976] [2019-12-27 04:26:45,877 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:45,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-27 04:26:45,962 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:45,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 04:26:45,964 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-27 04:26:46,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:46,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 24 [2019-12-27 04:26:46,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837685142] [2019-12-27 04:26:46,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-27 04:26:46,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:46,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-27 04:26:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-27 04:26:46,025 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand 24 states. [2019-12-27 04:26:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:26:49,722 INFO L93 Difference]: Finished difference Result 1267 states and 2524 transitions. [2019-12-27 04:26:49,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-12-27 04:26:49,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2019-12-27 04:26:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:26:49,730 INFO L225 Difference]: With dead ends: 1267 [2019-12-27 04:26:49,730 INFO L226 Difference]: Without dead ends: 1259 [2019-12-27 04:26:49,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17285 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9341, Invalid=26191, Unknown=0, NotChecked=0, Total=35532 [2019-12-27 04:26:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2019-12-27 04:26:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 188. [2019-12-27 04:26:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 04:26:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 398 transitions. [2019-12-27 04:26:49,750 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 398 transitions. Word has length 25 [2019-12-27 04:26:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:26:49,750 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 398 transitions. [2019-12-27 04:26:49,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-27 04:26:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 398 transitions. [2019-12-27 04:26:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 04:26:49,759 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:26:49,759 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:26:49,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:49,970 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:26:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:26:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1528033158, now seen corresponding path program 10 times [2019-12-27 04:26:49,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:26:49,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499575125] [2019-12-27 04:26:49,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:26:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:26:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:26:50,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499575125] [2019-12-27 04:26:50,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419237286] [2019-12-27 04:26:50,257 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:26:50,325 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 04:26:50,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:26:50,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 04:26:50,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:26:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-27 04:26:50,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:26:50,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 29 [2019-12-27 04:26:50,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887547367] [2019-12-27 04:26:50,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-27 04:26:50,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:26:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-27 04:26:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2019-12-27 04:26:50,446 INFO L87 Difference]: Start difference. First operand 188 states and 398 transitions. Second operand 29 states. [2019-12-27 04:27:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:27:02,533 INFO L93 Difference]: Finished difference Result 1400 states and 2796 transitions. [2019-12-27 04:27:02,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2019-12-27 04:27:02,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2019-12-27 04:27:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:27:02,541 INFO L225 Difference]: With dead ends: 1400 [2019-12-27 04:27:02,542 INFO L226 Difference]: Without dead ends: 1400 [2019-12-27 04:27:02,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84029 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=39039, Invalid=113451, Unknown=0, NotChecked=0, Total=152490 [2019-12-27 04:27:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-12-27 04:27:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 137. [2019-12-27 04:27:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-12-27 04:27:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 270 transitions. [2019-12-27 04:27:02,558 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 270 transitions. Word has length 26 [2019-12-27 04:27:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:27:02,559 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 270 transitions. [2019-12-27 04:27:02,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-27 04:27:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 270 transitions. [2019-12-27 04:27:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-27 04:27:02,560 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:27:02,560 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:27:02,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:02,766 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:27:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:27:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash 655160301, now seen corresponding path program 11 times [2019-12-27 04:27:02,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:27:02,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674245622] [2019-12-27 04:27:02,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:27:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:27:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:27:03,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674245622] [2019-12-27 04:27:03,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477521753] [2019-12-27 04:27:03,063 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:03,121 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-27 04:27:03,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:27:03,122 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 04:27:03,124 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:27:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-27 04:27:03,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:27:03,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 28 [2019-12-27 04:27:03,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074308788] [2019-12-27 04:27:03,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 04:27:03,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:27:03,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 04:27:03,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-12-27 04:27:03,214 INFO L87 Difference]: Start difference. First operand 137 states and 270 transitions. Second operand 28 states. [2019-12-27 04:27:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:27:09,087 INFO L93 Difference]: Finished difference Result 1982 states and 3953 transitions. [2019-12-27 04:27:09,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2019-12-27 04:27:09,087 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-12-27 04:27:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:27:09,097 INFO L225 Difference]: With dead ends: 1982 [2019-12-27 04:27:09,097 INFO L226 Difference]: Without dead ends: 1972 [2019-12-27 04:27:09,101 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41303 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=20189, Invalid=57931, Unknown=0, NotChecked=0, Total=78120 [2019-12-27 04:27:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2019-12-27 04:27:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 249. [2019-12-27 04:27:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-12-27 04:27:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 528 transitions. [2019-12-27 04:27:09,119 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 528 transitions. Word has length 28 [2019-12-27 04:27:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:27:09,120 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 528 transitions. [2019-12-27 04:27:09,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 04:27:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 528 transitions. [2019-12-27 04:27:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 04:27:09,121 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:27:09,121 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:27:09,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:09,326 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:27:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:27:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1134500648, now seen corresponding path program 12 times [2019-12-27 04:27:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:27:09,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979726302] [2019-12-27 04:27:09,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:27:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:27:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:27:09,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979726302] [2019-12-27 04:27:09,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089550067] [2019-12-27 04:27:09,680 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:09,798 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-27 04:27:09,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:27:09,799 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 04:27:09,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:27:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 04:27:09,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:27:09,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 33 [2019-12-27 04:27:09,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289476210] [2019-12-27 04:27:09,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-27 04:27:09,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:27:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-27 04:27:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-12-27 04:27:09,939 INFO L87 Difference]: Start difference. First operand 249 states and 528 transitions. Second operand 33 states. [2019-12-27 04:27:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:27:30,443 INFO L93 Difference]: Finished difference Result 2150 states and 4296 transitions. [2019-12-27 04:27:30,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2019-12-27 04:27:30,444 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-12-27 04:27:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:27:30,453 INFO L225 Difference]: With dead ends: 2150 [2019-12-27 04:27:30,453 INFO L226 Difference]: Without dead ends: 2150 [2019-12-27 04:27:30,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173324 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=76120, Invalid=226930, Unknown=0, NotChecked=0, Total=303050 [2019-12-27 04:27:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-12-27 04:27:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 172. [2019-12-27 04:27:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-27 04:27:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2019-12-27 04:27:30,475 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2019-12-27 04:27:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:27:30,475 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2019-12-27 04:27:30,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-27 04:27:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2019-12-27 04:27:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 04:27:30,476 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:27:30,476 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:27:30,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:30,680 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:27:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:27:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -307926907, now seen corresponding path program 13 times [2019-12-27 04:27:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:27:30,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938196986] [2019-12-27 04:27:30,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:27:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:27:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:27:30,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938196986] [2019-12-27 04:27:30,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493672256] [2019-12-27 04:27:30,936 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:27:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:27:31,002 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-27 04:27:31,004 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:27:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 04:27:31,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:27:31,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 36 [2019-12-27 04:27:31,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541574447] [2019-12-27 04:27:31,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 04:27:31,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:27:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 04:27:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 04:27:31,166 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 36 states. [2019-12-27 04:28:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:28:00,331 INFO L93 Difference]: Finished difference Result 2656 states and 5308 transitions. [2019-12-27 04:28:00,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2019-12-27 04:28:00,331 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 31 [2019-12-27 04:28:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:28:00,344 INFO L225 Difference]: With dead ends: 2656 [2019-12-27 04:28:00,344 INFO L226 Difference]: Without dead ends: 2656 [2019-12-27 04:28:00,352 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273352 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=117282, Invalid=349890, Unknown=0, NotChecked=0, Total=467172 [2019-12-27 04:28:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2019-12-27 04:28:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 188. [2019-12-27 04:28:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 04:28:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 372 transitions. [2019-12-27 04:28:00,369 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 372 transitions. Word has length 31 [2019-12-27 04:28:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:28:00,369 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 372 transitions. [2019-12-27 04:28:00,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 04:28:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 372 transitions. [2019-12-27 04:28:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 04:28:00,371 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:28:00,371 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:28:00,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:00,574 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:28:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:28:00,574 INFO L82 PathProgramCache]: Analyzing trace with hash -539511566, now seen corresponding path program 14 times [2019-12-27 04:28:00,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:28:00,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996371712] [2019-12-27 04:28:00,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:28:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:28:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:28:00,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996371712] [2019-12-27 04:28:00,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165053327] [2019-12-27 04:28:00,886 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:00,951 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 04:28:00,951 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:28:00,952 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 04:28:00,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:28:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 04:28:01,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:28:01,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 39 [2019-12-27 04:28:01,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089352008] [2019-12-27 04:28:01,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-27 04:28:01,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:28:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-27 04:28:01,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 04:28:01,171 INFO L87 Difference]: Start difference. First operand 188 states and 372 transitions. Second operand 39 states. [2019-12-27 04:28:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:28:41,769 INFO L93 Difference]: Finished difference Result 3228 states and 6452 transitions. [2019-12-27 04:28:41,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 825 states. [2019-12-27 04:28:41,770 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 33 [2019-12-27 04:28:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:28:41,785 INFO L225 Difference]: With dead ends: 3228 [2019-12-27 04:28:41,785 INFO L226 Difference]: Without dead ends: 3228 [2019-12-27 04:28:41,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415362 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=174859, Invalid=521531, Unknown=0, NotChecked=0, Total=696390 [2019-12-27 04:28:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-12-27 04:28:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 204. [2019-12-27 04:28:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-12-27 04:28:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 404 transitions. [2019-12-27 04:28:41,826 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 404 transitions. Word has length 33 [2019-12-27 04:28:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:28:41,826 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 404 transitions. [2019-12-27 04:28:41,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-27 04:28:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 404 transitions. [2019-12-27 04:28:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-27 04:28:41,827 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:28:41,827 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:28:42,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:42,031 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:28:42,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:28:42,031 INFO L82 PathProgramCache]: Analyzing trace with hash 245930527, now seen corresponding path program 15 times [2019-12-27 04:28:42,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:28:42,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888632141] [2019-12-27 04:28:42,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:28:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:28:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:28:42,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888632141] [2019-12-27 04:28:42,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279040774] [2019-12-27 04:28:42,440 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:42,514 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-27 04:28:42,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:28:42,515 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 04:28:42,516 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:28:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-12-27 04:28:42,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:28:42,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8] total 36 [2019-12-27 04:28:42,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827891886] [2019-12-27 04:28:42,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 04:28:42,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:28:42,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 04:28:42,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 04:28:42,636 INFO L87 Difference]: Start difference. First operand 204 states and 404 transitions. Second operand 36 states. [2019-12-27 04:28:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:28:55,312 INFO L93 Difference]: Finished difference Result 4264 states and 8516 transitions. [2019-12-27 04:28:55,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2019-12-27 04:28:55,312 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2019-12-27 04:28:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:28:55,327 INFO L225 Difference]: With dead ends: 4264 [2019-12-27 04:28:55,328 INFO L226 Difference]: Without dead ends: 4252 [2019-12-27 04:28:55,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135844 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=60247, Invalid=176435, Unknown=0, NotChecked=0, Total=236682 [2019-12-27 04:28:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-27 04:28:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 379. [2019-12-27 04:28:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-12-27 04:28:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 801 transitions. [2019-12-27 04:28:55,362 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 801 transitions. Word has length 35 [2019-12-27 04:28:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:28:55,362 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 801 transitions. [2019-12-27 04:28:55,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 04:28:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 801 transitions. [2019-12-27 04:28:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-27 04:28:55,363 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:28:55,364 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:28:55,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:55,567 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:28:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:28:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -935721754, now seen corresponding path program 16 times [2019-12-27 04:28:55,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:28:55,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231124825] [2019-12-27 04:28:55,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:28:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:28:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:28:55,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231124825] [2019-12-27 04:28:55,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771876744] [2019-12-27 04:28:55,950 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:28:56,029 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 04:28:56,029 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:28:56,030 INFO L264 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 04:28:56,031 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:28:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-27 04:28:56,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:28:56,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 43 [2019-12-27 04:28:56,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359944131] [2019-12-27 04:28:56,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 04:28:56,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:28:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 04:28:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 04:28:56,315 INFO L87 Difference]: Start difference. First operand 379 states and 801 transitions. Second operand 43 states. [2019-12-27 04:29:49,876 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-12-27 04:30:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:30:01,235 INFO L93 Difference]: Finished difference Result 4559 states and 9114 transitions. [2019-12-27 04:30:01,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1084 states. [2019-12-27 04:30:01,235 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 36 [2019-12-27 04:30:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:30:01,255 INFO L225 Difference]: With dead ends: 4559 [2019-12-27 04:30:01,256 INFO L226 Difference]: Without dead ends: 4559 [2019-12-27 04:30:01,281 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728882 ImplicationChecksByTransitivity, 60.2s TimeCoverageRelationStatistics Valid=296426, Invalid=901504, Unknown=0, NotChecked=0, Total=1197930 [2019-12-27 04:30:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2019-12-27 04:30:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 247. [2019-12-27 04:30:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-27 04:30:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2019-12-27 04:30:01,303 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 36 [2019-12-27 04:30:01,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:30:01,303 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2019-12-27 04:30:01,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 04:30:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2019-12-27 04:30:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 04:30:01,304 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:30:01,304 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:30:01,507 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:30:01,507 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:30:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:30:01,508 INFO L82 PathProgramCache]: Analyzing trace with hash -812157799, now seen corresponding path program 17 times [2019-12-27 04:30:01,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:30:01,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898268941] [2019-12-27 04:30:01,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:30:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:30:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:30:01,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898268941] [2019-12-27 04:30:01,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561601341] [2019-12-27 04:30:01,917 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:30:01,982 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-27 04:30:01,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:30:01,984 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 04:30:01,985 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:30:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-27 04:30:02,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:30:02,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 40 [2019-12-27 04:30:02,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424466116] [2019-12-27 04:30:02,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-27 04:30:02,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:30:02,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-27 04:30:02,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 04:30:02,156 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 40 states. [2019-12-27 04:30:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 04:30:21,453 INFO L93 Difference]: Finished difference Result 5929 states and 11845 transitions. [2019-12-27 04:30:21,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-27 04:30:21,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-12-27 04:30:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 04:30:21,471 INFO L225 Difference]: With dead ends: 5929 [2019-12-27 04:30:21,471 INFO L226 Difference]: Without dead ends: 5915 [2019-12-27 04:30:21,480 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252388 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=106734, Invalid=316416, Unknown=0, NotChecked=0, Total=423150 [2019-12-27 04:30:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2019-12-27 04:30:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 466. [2019-12-27 04:30:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-27 04:30:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 985 transitions. [2019-12-27 04:30:21,512 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 985 transitions. Word has length 38 [2019-12-27 04:30:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 04:30:21,512 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 985 transitions. [2019-12-27 04:30:21,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-27 04:30:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 985 transitions. [2019-12-27 04:30:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-27 04:30:21,514 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 04:30:21,514 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 04:30:21,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:30:21,717 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 04:30:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 04:30:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 623278508, now seen corresponding path program 18 times [2019-12-27 04:30:21,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 04:30:21,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873530310] [2019-12-27 04:30:21,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 04:30:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 04:30:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 04:30:22,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873530310] [2019-12-27 04:30:22,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64931610] [2019-12-27 04:30:22,233 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:30:22,322 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-27 04:30:22,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 04:30:22,323 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 04:30:22,324 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 04:30:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-27 04:30:22,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 04:30:22,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 42 [2019-12-27 04:30:22,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586636890] [2019-12-27 04:30:22,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-27 04:30:22,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 04:30:22,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-27 04:30:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-12-27 04:30:22,475 INFO L87 Difference]: Start difference. First operand 466 states and 985 transitions. Second operand 42 states. Received shutdown request... [2019-12-27 04:30:23,123 WARN L209 SmtUtils]: Removed 3 from assertion stack [2019-12-27 04:30:23,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-27 04:30:23,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 04:30:23,324 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 04:30:23,327 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 04:30:23,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 04:30:23 BasicIcfg [2019-12-27 04:30:23,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 04:30:23,329 INFO L168 Benchmark]: Toolchain (without parser) took 247754.41 ms. Allocated memory was 138.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 98.9 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 461.6 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,329 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1089.81 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.7 MB in the beginning and 108.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 203.4 MB. Free memory was 108.3 MB in the beginning and 105.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,330 INFO L168 Benchmark]: Boogie Preprocessor took 35.88 ms. Allocated memory is still 203.4 MB. Free memory was 105.6 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,331 INFO L168 Benchmark]: RCFGBuilder took 545.98 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 104.3 MB in the beginning and 195.6 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,332 INFO L168 Benchmark]: TraceAbstraction took 246019.66 ms. Allocated memory was 235.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 195.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 460.8 MB. Max. memory is 7.1 GB. [2019-12-27 04:30:23,334 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1089.81 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.7 MB in the beginning and 108.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 203.4 MB. Free memory was 108.3 MB in the beginning and 105.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.88 ms. Allocated memory is still 203.4 MB. Free memory was 105.6 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 545.98 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 104.3 MB in the beginning and 195.6 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246019.66 ms. Allocated memory was 235.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 195.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 460.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.1s, 82 ProgramPointsBefore, 14 ProgramPointsAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 328 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 510 CheckedPairsTotal, 77 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 42 states, 42 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 245.9s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 228.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 311 SDtfs, 5717 SDslu, 4172 SDs, 0 SdLazy, 4729 SolverSat, 12800 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6856 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 6072 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193654 ImplicationChecksByTransitivity, 209.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 27544 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 929 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 60815 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2695 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 647/2473 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown