/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:13:20,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:13:20,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:13:20,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:13:20,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:13:20,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:13:20,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:13:20,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:13:20,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:13:20,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:13:20,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:13:20,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:13:20,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:13:20,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:13:20,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:13:20,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:13:20,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:13:20,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:13:20,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:13:20,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:13:21,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:13:21,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:13:21,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:13:21,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:13:21,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:13:21,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:13:21,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:13:21,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:13:21,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:13:21,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:13:21,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:13:21,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:13:21,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:13:21,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:13:21,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:13:21,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:13:21,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:13:21,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:13:21,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:13:21,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:13:21,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:13:21,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 03:13:21,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:13:21,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:13:21,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:13:21,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:13:21,057 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:13:21,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:13:21,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:13:21,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:13:21,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:13:21,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:13:21,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:13:21,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:13:21,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:13:21,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:13:21,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:13:21,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:13:21,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:13:21,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:13:21,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:13:21,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:13:21,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:13:21,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:13:21,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:13:21,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:13:21,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:13:21,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:13:21,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:13:21,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 03:13:21,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:13:21,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:13:21,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:13:21,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:13:21,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:13:21,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:13:21,363 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:13:21,364 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-04-18 03:13:21,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d57d7a8/a5d154aa368a48b9ba272e808bd1101b/FLAG352cce9dd [2020-04-18 03:13:22,074 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:13:22,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-04-18 03:13:22,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d57d7a8/a5d154aa368a48b9ba272e808bd1101b/FLAG352cce9dd [2020-04-18 03:13:22,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d57d7a8/a5d154aa368a48b9ba272e808bd1101b [2020-04-18 03:13:22,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:13:22,393 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:13:22,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:13:22,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:13:22,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:13:22,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:13:22" (1/1) ... [2020-04-18 03:13:22,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0cd341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:22, skipping insertion in model container [2020-04-18 03:13:22,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:13:22" (1/1) ... [2020-04-18 03:13:22,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:13:22,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:13:22,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:13:22,907 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:13:22,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:13:23,036 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:13:23,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23 WrapperNode [2020-04-18 03:13:23,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:13:23,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:13:23,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:13:23,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:13:23,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:13:23,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:13:23,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:13:23,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:13:23,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... [2020-04-18 03:13:23,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:13:23,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:13:23,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:13:23,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:13:23,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:13:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 03:13:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 03:13:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 03:13:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 03:13:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:13:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 03:13:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:13:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:13:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 03:13:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:13:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:13:23,191 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:13:23,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:13:23,568 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-04-18 03:13:23,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:13:23 BoogieIcfgContainer [2020-04-18 03:13:23,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:13:23,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:13:23,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:13:23,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:13:23,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:13:22" (1/3) ... [2020-04-18 03:13:23,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634a822f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:13:23, skipping insertion in model container [2020-04-18 03:13:23,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:13:23" (2/3) ... [2020-04-18 03:13:23,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634a822f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:13:23, skipping insertion in model container [2020-04-18 03:13:23,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:13:23" (3/3) ... [2020-04-18 03:13:23,581 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-04-18 03:13:23,592 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:13:23,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:13:23,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:13:23,600 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:13:23,623 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,623 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,624 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,624 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,625 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,625 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,625 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,626 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,626 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,626 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,627 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,627 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,627 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,627 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,628 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,628 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,629 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,629 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,629 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,629 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,630 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,630 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,630 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,631 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,631 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,632 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,632 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,632 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,632 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,633 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,636 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,637 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,637 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,637 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,638 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,638 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,647 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,648 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,648 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,648 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,649 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,649 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:13:23,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 03:13:23,685 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:13:23,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:13:23,685 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:13:23,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:13:23,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:13:23,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:13:23,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:13:23,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:13:23,698 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 57 transitions, 124 flow [2020-04-18 03:13:23,812 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1741 states. [2020-04-18 03:13:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states. [2020-04-18 03:13:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 03:13:23,832 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:23,833 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:23,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:23,839 INFO L82 PathProgramCache]: Analyzing trace with hash 627590565, now seen corresponding path program 1 times [2020-04-18 03:13:23,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:23,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589715712] [2020-04-18 03:13:23,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:24,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589715712] [2020-04-18 03:13:24,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:13:24,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:13:24,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72305443] [2020-04-18 03:13:24,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 03:13:24,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 03:13:24,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 03:13:24,257 INFO L87 Difference]: Start difference. First operand 1741 states. Second operand 6 states. [2020-04-18 03:13:24,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:24,588 INFO L93 Difference]: Finished difference Result 3726 states and 10822 transitions. [2020-04-18 03:13:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 03:13:24,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-04-18 03:13:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:24,625 INFO L225 Difference]: With dead ends: 3726 [2020-04-18 03:13:24,626 INFO L226 Difference]: Without dead ends: 1164 [2020-04-18 03:13:24,628 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:13:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2020-04-18 03:13:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 899. [2020-04-18 03:13:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-04-18 03:13:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 2439 transitions. [2020-04-18 03:13:24,747 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 2439 transitions. Word has length 22 [2020-04-18 03:13:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:24,747 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 2439 transitions. [2020-04-18 03:13:24,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 03:13:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 2439 transitions. [2020-04-18 03:13:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 03:13:24,752 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:24,752 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:24,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1828680335, now seen corresponding path program 1 times [2020-04-18 03:13:24,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:24,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049346188] [2020-04-18 03:13:24,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:25,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049346188] [2020-04-18 03:13:25,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:13:25,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:13:25,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856234226] [2020-04-18 03:13:25,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:13:25,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:25,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:13:25,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:13:25,014 INFO L87 Difference]: Start difference. First operand 899 states and 2439 transitions. Second operand 7 states. [2020-04-18 03:13:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:25,335 INFO L93 Difference]: Finished difference Result 2140 states and 5665 transitions. [2020-04-18 03:13:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 03:13:25,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-04-18 03:13:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:25,352 INFO L225 Difference]: With dead ends: 2140 [2020-04-18 03:13:25,352 INFO L226 Difference]: Without dead ends: 1664 [2020-04-18 03:13:25,353 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:13:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-04-18 03:13:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1195. [2020-04-18 03:13:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-04-18 03:13:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 3244 transitions. [2020-04-18 03:13:25,415 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 3244 transitions. Word has length 27 [2020-04-18 03:13:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:25,417 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 3244 transitions. [2020-04-18 03:13:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:13:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 3244 transitions. [2020-04-18 03:13:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-04-18 03:13:25,431 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:25,431 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:25,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash 637689491, now seen corresponding path program 1 times [2020-04-18 03:13:25,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:25,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144696682] [2020-04-18 03:13:25,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:25,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144696682] [2020-04-18 03:13:25,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:13:25,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 03:13:25,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815024536] [2020-04-18 03:13:25,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 03:13:25,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:25,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 03:13:25,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 03:13:25,667 INFO L87 Difference]: Start difference. First operand 1195 states and 3244 transitions. Second operand 8 states. [2020-04-18 03:13:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:26,037 INFO L93 Difference]: Finished difference Result 2622 states and 6914 transitions. [2020-04-18 03:13:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 03:13:26,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-04-18 03:13:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:26,054 INFO L225 Difference]: With dead ends: 2622 [2020-04-18 03:13:26,054 INFO L226 Difference]: Without dead ends: 2146 [2020-04-18 03:13:26,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-04-18 03:13:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-04-18 03:13:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1485. [2020-04-18 03:13:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-04-18 03:13:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4004 transitions. [2020-04-18 03:13:26,118 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4004 transitions. Word has length 32 [2020-04-18 03:13:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:26,119 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 4004 transitions. [2020-04-18 03:13:26,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 03:13:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4004 transitions. [2020-04-18 03:13:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 03:13:26,123 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:26,124 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:26,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1255519260, now seen corresponding path program 1 times [2020-04-18 03:13:26,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:26,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859184928] [2020-04-18 03:13:26,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:26,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859184928] [2020-04-18 03:13:26,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651581330] [2020-04-18 03:13:26,390 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 [2020-04-18 03:13:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:26,465 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 03:13:26,475 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:26,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:26,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:26,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:26,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-04-18 03:13:26,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254797002] [2020-04-18 03:13:26,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 03:13:26,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 03:13:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 03:13:26,649 INFO L87 Difference]: Start difference. First operand 1485 states and 4004 transitions. Second operand 14 states. [2020-04-18 03:13:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:27,705 INFO L93 Difference]: Finished difference Result 4438 states and 11566 transitions. [2020-04-18 03:13:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-18 03:13:27,706 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-04-18 03:13:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:27,729 INFO L225 Difference]: With dead ends: 4438 [2020-04-18 03:13:27,729 INFO L226 Difference]: Without dead ends: 3398 [2020-04-18 03:13:27,731 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=417, Invalid=1653, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:13:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2020-04-18 03:13:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 2101. [2020-04-18 03:13:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-04-18 03:13:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 5623 transitions. [2020-04-18 03:13:27,816 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 5623 transitions. Word has length 37 [2020-04-18 03:13:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:27,817 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 5623 transitions. [2020-04-18 03:13:27,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 03:13:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 5623 transitions. [2020-04-18 03:13:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 03:13:27,822 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:27,822 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:28,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:28,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash -520422237, now seen corresponding path program 1 times [2020-04-18 03:13:28,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:28,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728495422] [2020-04-18 03:13:28,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:28,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728495422] [2020-04-18 03:13:28,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622835103] [2020-04-18 03:13:28,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-18 03:13:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:28,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 03:13:28,295 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:28,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:28,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:28,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:28,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-04-18 03:13:28,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171996372] [2020-04-18 03:13:28,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:13:28,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:13:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:13:28,520 INFO L87 Difference]: Start difference. First operand 2101 states and 5623 transitions. Second operand 16 states. [2020-04-18 03:13:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:29,786 INFO L93 Difference]: Finished difference Result 4706 states and 12208 transitions. [2020-04-18 03:13:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-04-18 03:13:29,787 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-04-18 03:13:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:29,812 INFO L225 Difference]: With dead ends: 4706 [2020-04-18 03:13:29,813 INFO L226 Difference]: Without dead ends: 4118 [2020-04-18 03:13:29,814 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:13:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-04-18 03:13:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 2314. [2020-04-18 03:13:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2314 states. [2020-04-18 03:13:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 6210 transitions. [2020-04-18 03:13:29,903 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 6210 transitions. Word has length 42 [2020-04-18 03:13:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:29,903 INFO L479 AbstractCegarLoop]: Abstraction has 2314 states and 6210 transitions. [2020-04-18 03:13:29,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:13:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 6210 transitions. [2020-04-18 03:13:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 03:13:29,909 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:29,909 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:30,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:30,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1256086345, now seen corresponding path program 2 times [2020-04-18 03:13:30,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:30,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795757337] [2020-04-18 03:13:30,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:30,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795757337] [2020-04-18 03:13:30,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715767765] [2020-04-18 03:13:30,307 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 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 [2020-04-18 03:13:30,377 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:13:30,377 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:13:30,378 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 03:13:30,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:30,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:30,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:30,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:30,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-04-18 03:13:30,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480981366] [2020-04-18 03:13:30,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:13:30,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:30,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:13:30,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:13:30,517 INFO L87 Difference]: Start difference. First operand 2314 states and 6210 transitions. Second operand 16 states. [2020-04-18 03:13:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:31,721 INFO L93 Difference]: Finished difference Result 5714 states and 14843 transitions. [2020-04-18 03:13:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 03:13:31,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-04-18 03:13:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:31,752 INFO L225 Difference]: With dead ends: 5714 [2020-04-18 03:13:31,752 INFO L226 Difference]: Without dead ends: 4916 [2020-04-18 03:13:31,754 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=478, Invalid=2072, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 03:13:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2020-04-18 03:13:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 2482. [2020-04-18 03:13:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-04-18 03:13:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 6650 transitions. [2020-04-18 03:13:31,856 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 6650 transitions. Word has length 42 [2020-04-18 03:13:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:31,856 INFO L479 AbstractCegarLoop]: Abstraction has 2482 states and 6650 transitions. [2020-04-18 03:13:31,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:13:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 6650 transitions. [2020-04-18 03:13:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:13:31,863 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:31,863 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:32,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:32,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:32,067 INFO L82 PathProgramCache]: Analyzing trace with hash 490795132, now seen corresponding path program 3 times [2020-04-18 03:13:32,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:32,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011728232] [2020-04-18 03:13:32,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:32,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011728232] [2020-04-18 03:13:32,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357616022] [2020-04-18 03:13:32,300 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 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 [2020-04-18 03:13:32,370 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:13:32,370 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:13:32,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:13:32,373 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:32,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:32,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:32,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:32,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-04-18 03:13:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180347162] [2020-04-18 03:13:32,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:13:32,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:13:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:13:32,554 INFO L87 Difference]: Start difference. First operand 2482 states and 6650 transitions. Second operand 17 states. [2020-04-18 03:13:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:33,676 INFO L93 Difference]: Finished difference Result 5332 states and 13997 transitions. [2020-04-18 03:13:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-18 03:13:33,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-04-18 03:13:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:33,691 INFO L225 Difference]: With dead ends: 5332 [2020-04-18 03:13:33,691 INFO L226 Difference]: Without dead ends: 4920 [2020-04-18 03:13:33,693 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 03:13:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2020-04-18 03:13:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 2834. [2020-04-18 03:13:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2020-04-18 03:13:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 7724 transitions. [2020-04-18 03:13:33,826 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 7724 transitions. Word has length 47 [2020-04-18 03:13:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:33,826 INFO L479 AbstractCegarLoop]: Abstraction has 2834 states and 7724 transitions. [2020-04-18 03:13:33,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:13:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 7724 transitions. [2020-04-18 03:13:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:13:33,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:33,833 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:34,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:34,038 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash -29094556, now seen corresponding path program 4 times [2020-04-18 03:13:34,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:34,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729706699] [2020-04-18 03:13:34,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:34,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729706699] [2020-04-18 03:13:34,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016153918] [2020-04-18 03:13:34,226 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 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 [2020-04-18 03:13:34,274 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:13:34,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:13:34,275 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:13:34,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:34,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:34,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:34,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:34,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-04-18 03:13:34,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148157096] [2020-04-18 03:13:34,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:13:34,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:34,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:13:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:13:34,410 INFO L87 Difference]: Start difference. First operand 2834 states and 7724 transitions. Second operand 17 states. [2020-04-18 03:13:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:35,710 INFO L93 Difference]: Finished difference Result 6151 states and 16235 transitions. [2020-04-18 03:13:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-04-18 03:13:35,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-04-18 03:13:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:35,728 INFO L225 Difference]: With dead ends: 6151 [2020-04-18 03:13:35,728 INFO L226 Difference]: Without dead ends: 5617 [2020-04-18 03:13:35,729 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=2313, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 03:13:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2020-04-18 03:13:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 2880. [2020-04-18 03:13:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-04-18 03:13:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 7895 transitions. [2020-04-18 03:13:35,835 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 7895 transitions. Word has length 47 [2020-04-18 03:13:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:35,835 INFO L479 AbstractCegarLoop]: Abstraction has 2880 states and 7895 transitions. [2020-04-18 03:13:35,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:13:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 7895 transitions. [2020-04-18 03:13:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:13:35,842 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:35,842 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:36,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:36,055 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:36,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:36,055 INFO L82 PathProgramCache]: Analyzing trace with hash -864451660, now seen corresponding path program 5 times [2020-04-18 03:13:36,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:36,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274558660] [2020-04-18 03:13:36,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:36,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274558660] [2020-04-18 03:13:36,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419712858] [2020-04-18 03:13:36,232 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 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 [2020-04-18 03:13:36,311 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 03:13:36,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:13:36,312 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:13:36,315 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:36,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:36,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:36,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:36,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-04-18 03:13:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998674317] [2020-04-18 03:13:36,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:13:36,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:13:36,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:13:36,525 INFO L87 Difference]: Start difference. First operand 2880 states and 7895 transitions. Second operand 17 states. [2020-04-18 03:13:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:37,662 INFO L93 Difference]: Finished difference Result 5862 states and 15578 transitions. [2020-04-18 03:13:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 03:13:37,663 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-04-18 03:13:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:37,672 INFO L225 Difference]: With dead ends: 5862 [2020-04-18 03:13:37,672 INFO L226 Difference]: Without dead ends: 5498 [2020-04-18 03:13:37,674 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=405, Invalid=1665, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:13:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2020-04-18 03:13:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 2982. [2020-04-18 03:13:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2982 states. [2020-04-18 03:13:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 8270 transitions. [2020-04-18 03:13:37,770 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 8270 transitions. Word has length 47 [2020-04-18 03:13:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:37,770 INFO L479 AbstractCegarLoop]: Abstraction has 2982 states and 8270 transitions. [2020-04-18 03:13:37,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:13:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 8270 transitions. [2020-04-18 03:13:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:13:37,777 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:37,777 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:37,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:37,982 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1080226080, now seen corresponding path program 6 times [2020-04-18 03:13:37,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:37,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404282024] [2020-04-18 03:13:37,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:38,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404282024] [2020-04-18 03:13:38,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247386822] [2020-04-18 03:13:38,167 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 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 [2020-04-18 03:13:38,221 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 03:13:38,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:13:38,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:13:38,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:38,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:38,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:38,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:38,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-04-18 03:13:38,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276810973] [2020-04-18 03:13:38,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:13:38,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:38,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:13:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:13:38,448 INFO L87 Difference]: Start difference. First operand 2982 states and 8270 transitions. Second operand 17 states. [2020-04-18 03:13:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:13:40,777 INFO L93 Difference]: Finished difference Result 6016 states and 16042 transitions. [2020-04-18 03:13:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-18 03:13:40,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-04-18 03:13:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:13:40,786 INFO L225 Difference]: With dead ends: 6016 [2020-04-18 03:13:40,787 INFO L226 Difference]: Without dead ends: 5652 [2020-04-18 03:13:40,788 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=443, Invalid=1909, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 03:13:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2020-04-18 03:13:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 2932. [2020-04-18 03:13:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2932 states. [2020-04-18 03:13:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 8100 transitions. [2020-04-18 03:13:40,868 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 8100 transitions. Word has length 47 [2020-04-18 03:13:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:13:40,868 INFO L479 AbstractCegarLoop]: Abstraction has 2932 states and 8100 transitions. [2020-04-18 03:13:40,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:13:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 8100 transitions. [2020-04-18 03:13:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:13:40,875 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:13:40,875 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:13:41,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:13:41,080 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:13:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:13:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash 728987418, now seen corresponding path program 7 times [2020-04-18 03:13:41,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:13:41,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752955550] [2020-04-18 03:13:41,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:13:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:41,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752955550] [2020-04-18 03:13:41,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090359390] [2020-04-18 03:13:41,257 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 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 [2020-04-18 03:13:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:13:41,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:13:41,304 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:13:41,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:43,110 WARN L192 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-04-18 03:13:43,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:13:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:13:43,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:13:43,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-04-18 03:13:43,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387576527] [2020-04-18 03:13:43,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 03:13:43,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:13:43,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 03:13:43,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=248, Unknown=2, NotChecked=0, Total=306 [2020-04-18 03:13:43,128 INFO L87 Difference]: Start difference. First operand 2932 states and 8100 transitions. Second operand 18 states. [2020-04-18 03:13:46,352 WARN L192 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-04-18 03:13:53,469 WARN L192 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-04-18 03:14:09,639 WARN L192 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-04-18 03:14:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:09,695 INFO L93 Difference]: Finished difference Result 5940 states and 15727 transitions. [2020-04-18 03:14:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-04-18 03:14:09,696 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-04-18 03:14:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:09,703 INFO L225 Difference]: With dead ends: 5940 [2020-04-18 03:14:09,703 INFO L226 Difference]: Without dead ends: 5576 [2020-04-18 03:14:09,705 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=518, Invalid=2223, Unknown=15, NotChecked=0, Total=2756 [2020-04-18 03:14:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2020-04-18 03:14:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 2922. [2020-04-18 03:14:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2020-04-18 03:14:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 8078 transitions. [2020-04-18 03:14:09,836 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 8078 transitions. Word has length 47 [2020-04-18 03:14:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:09,836 INFO L479 AbstractCegarLoop]: Abstraction has 2922 states and 8078 transitions. [2020-04-18 03:14:09,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 03:14:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 8078 transitions. [2020-04-18 03:14:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 03:14:09,844 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:09,844 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:10,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:10,045 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1639823560, now seen corresponding path program 8 times [2020-04-18 03:14:10,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:10,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542303687] [2020-04-18 03:14:10,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:10,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542303687] [2020-04-18 03:14:10,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112789550] [2020-04-18 03:14:10,218 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 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 [2020-04-18 03:14:10,263 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:14:10,263 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:10,264 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:14:10,275 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:10,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:10,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:10,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:10,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-04-18 03:14:10,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120774726] [2020-04-18 03:14:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:14:10,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:10,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:14:10,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:14:10,430 INFO L87 Difference]: Start difference. First operand 2922 states and 8078 transitions. Second operand 17 states. [2020-04-18 03:14:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:11,727 INFO L93 Difference]: Finished difference Result 6066 states and 16149 transitions. [2020-04-18 03:14:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-04-18 03:14:11,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-04-18 03:14:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:11,738 INFO L225 Difference]: With dead ends: 6066 [2020-04-18 03:14:11,738 INFO L226 Difference]: Without dead ends: 5532 [2020-04-18 03:14:11,740 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=526, Invalid=2444, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 03:14:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2020-04-18 03:14:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 3136. [2020-04-18 03:14:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-04-18 03:14:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 8706 transitions. [2020-04-18 03:14:11,843 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 8706 transitions. Word has length 47 [2020-04-18 03:14:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:11,844 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 8706 transitions. [2020-04-18 03:14:11,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:14:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 8706 transitions. [2020-04-18 03:14:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:11,850 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:11,850 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:12,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:12,052 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:12,052 INFO L82 PathProgramCache]: Analyzing trace with hash -536445885, now seen corresponding path program 9 times [2020-04-18 03:14:12,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:12,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506492730] [2020-04-18 03:14:12,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:12,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506492730] [2020-04-18 03:14:12,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299994901] [2020-04-18 03:14:12,379 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 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 [2020-04-18 03:14:12,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-04-18 03:14:12,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:12,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:14:12,442 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:12,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:12,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:12,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:12,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:14:12,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267807743] [2020-04-18 03:14:12,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:14:12,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:14:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:14:12,660 INFO L87 Difference]: Start difference. First operand 3136 states and 8706 transitions. Second operand 20 states. [2020-04-18 03:14:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:14,360 INFO L93 Difference]: Finished difference Result 7558 states and 19829 transitions. [2020-04-18 03:14:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-04-18 03:14:14,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-04-18 03:14:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:14,369 INFO L225 Difference]: With dead ends: 7558 [2020-04-18 03:14:14,370 INFO L226 Difference]: Without dead ends: 6970 [2020-04-18 03:14:14,371 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=730, Invalid=3302, Unknown=0, NotChecked=0, Total=4032 [2020-04-18 03:14:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-04-18 03:14:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 3486. [2020-04-18 03:14:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3486 states. [2020-04-18 03:14:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 9682 transitions. [2020-04-18 03:14:14,459 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 9682 transitions. Word has length 52 [2020-04-18 03:14:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:14,459 INFO L479 AbstractCegarLoop]: Abstraction has 3486 states and 9682 transitions. [2020-04-18 03:14:14,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:14:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 9682 transitions. [2020-04-18 03:14:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:14,466 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:14,466 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:14,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:14,675 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:14,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1056335573, now seen corresponding path program 10 times [2020-04-18 03:14:14,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:14,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576497491] [2020-04-18 03:14:14,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:14,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576497491] [2020-04-18 03:14:14,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845696125] [2020-04-18 03:14:14,914 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 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 [2020-04-18 03:14:14,956 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:14:14,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:14,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:14:14,957 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:15,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:16,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:16,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:16,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:14:16,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623993475] [2020-04-18 03:14:16,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:14:16,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:14:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=306, Unknown=1, NotChecked=0, Total=380 [2020-04-18 03:14:16,031 INFO L87 Difference]: Start difference. First operand 3486 states and 9682 transitions. Second operand 20 states. [2020-04-18 03:14:17,139 WARN L192 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-04-18 03:14:18,379 WARN L192 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-04-18 03:14:19,019 WARN L192 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 23 [2020-04-18 03:14:21,702 WARN L192 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2020-04-18 03:14:22,376 WARN L192 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-04-18 03:14:25,768 WARN L192 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-04-18 03:14:28,638 WARN L192 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-04-18 03:14:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:37,821 INFO L93 Difference]: Finished difference Result 8118 states and 21441 transitions. [2020-04-18 03:14:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-04-18 03:14:37,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-04-18 03:14:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:37,831 INFO L225 Difference]: With dead ends: 8118 [2020-04-18 03:14:37,831 INFO L226 Difference]: Without dead ends: 7578 [2020-04-18 03:14:37,832 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=759, Invalid=3392, Unknown=9, NotChecked=0, Total=4160 [2020-04-18 03:14:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7578 states. [2020-04-18 03:14:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7578 to 3606. [2020-04-18 03:14:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3606 states. [2020-04-18 03:14:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 10036 transitions. [2020-04-18 03:14:37,945 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 10036 transitions. Word has length 52 [2020-04-18 03:14:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:37,946 INFO L479 AbstractCegarLoop]: Abstraction has 3606 states and 10036 transitions. [2020-04-18 03:14:37,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:14:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 10036 transitions. [2020-04-18 03:14:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:37,961 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:37,961 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:38,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:38,166 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2088317019, now seen corresponding path program 11 times [2020-04-18 03:14:38,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:38,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062679851] [2020-04-18 03:14:38,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:38,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062679851] [2020-04-18 03:14:38,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955524683] [2020-04-18 03:14:38,385 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 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 [2020-04-18 03:14:38,486 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 03:14:38,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:38,486 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:14:38,487 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:38,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:38,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:38,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:38,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:14:38,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498068915] [2020-04-18 03:14:38,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:14:38,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:14:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:14:38,666 INFO L87 Difference]: Start difference. First operand 3606 states and 10036 transitions. Second operand 20 states. [2020-04-18 03:14:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:41,147 INFO L93 Difference]: Finished difference Result 9147 states and 24103 transitions. [2020-04-18 03:14:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-04-18 03:14:41,147 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-04-18 03:14:41,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:41,159 INFO L225 Difference]: With dead ends: 9147 [2020-04-18 03:14:41,159 INFO L226 Difference]: Without dead ends: 8349 [2020-04-18 03:14:41,161 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1075, Invalid=5087, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 03:14:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2020-04-18 03:14:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 3999. [2020-04-18 03:14:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2020-04-18 03:14:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 11035 transitions. [2020-04-18 03:14:41,419 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 11035 transitions. Word has length 52 [2020-04-18 03:14:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:41,419 INFO L479 AbstractCegarLoop]: Abstraction has 3999 states and 11035 transitions. [2020-04-18 03:14:41,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:14:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 11035 transitions. [2020-04-18 03:14:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:41,435 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:41,435 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:41,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:41,639 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2016510169, now seen corresponding path program 12 times [2020-04-18 03:14:41,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:41,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130755604] [2020-04-18 03:14:41,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:41,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130755604] [2020-04-18 03:14:41,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418566292] [2020-04-18 03:14:41,845 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 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 [2020-04-18 03:14:41,904 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 03:14:41,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:41,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-18 03:14:41,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:42,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:42,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:42,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:42,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:14:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653887961] [2020-04-18 03:14:42,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:14:42,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:42,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:14:42,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:14:42,089 INFO L87 Difference]: Start difference. First operand 3999 states and 11035 transitions. Second operand 20 states. [2020-04-18 03:14:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:43,440 INFO L93 Difference]: Finished difference Result 7837 states and 20784 transitions. [2020-04-18 03:14:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-04-18 03:14:43,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-04-18 03:14:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:43,451 INFO L225 Difference]: With dead ends: 7837 [2020-04-18 03:14:43,451 INFO L226 Difference]: Without dead ends: 7473 [2020-04-18 03:14:43,452 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=673, Invalid=2749, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 03:14:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7473 states. [2020-04-18 03:14:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7473 to 4099. [2020-04-18 03:14:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-04-18 03:14:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 11375 transitions. [2020-04-18 03:14:43,554 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 11375 transitions. Word has length 52 [2020-04-18 03:14:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:43,554 INFO L479 AbstractCegarLoop]: Abstraction has 4099 states and 11375 transitions. [2020-04-18 03:14:43,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:14:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 11375 transitions. [2020-04-18 03:14:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:43,568 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:43,568 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:43,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:43,772 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1072603441, now seen corresponding path program 2 times [2020-04-18 03:14:43,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:43,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698535351] [2020-04-18 03:14:43,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:43,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698535351] [2020-04-18 03:14:43,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553587259] [2020-04-18 03:14:43,982 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 [2020-04-18 03:14:44,031 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:14:44,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:14:44,032 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:14:44,033 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:44,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:44,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:44,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:44,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:14:44,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254229993] [2020-04-18 03:14:44,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:14:44,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:44,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:14:44,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:14:44,202 INFO L87 Difference]: Start difference. First operand 4099 states and 11375 transitions. Second operand 20 states. [2020-04-18 03:14:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:14:46,712 INFO L93 Difference]: Finished difference Result 9771 states and 25301 transitions. [2020-04-18 03:14:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-04-18 03:14:46,712 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-04-18 03:14:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:14:46,723 INFO L225 Difference]: With dead ends: 9771 [2020-04-18 03:14:46,724 INFO L226 Difference]: Without dead ends: 8779 [2020-04-18 03:14:46,726 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1245, Invalid=5895, Unknown=0, NotChecked=0, Total=7140 [2020-04-18 03:14:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2020-04-18 03:14:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 4407. [2020-04-18 03:14:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4407 states. [2020-04-18 03:14:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 12177 transitions. [2020-04-18 03:14:46,817 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 12177 transitions. Word has length 52 [2020-04-18 03:14:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:14:46,818 INFO L479 AbstractCegarLoop]: Abstraction has 4407 states and 12177 transitions. [2020-04-18 03:14:46,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:14:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 12177 transitions. [2020-04-18 03:14:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:14:46,825 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:14:46,825 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:14:47,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:14:47,028 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:14:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:14:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1754405385, now seen corresponding path program 13 times [2020-04-18 03:14:47,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:14:47,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062887960] [2020-04-18 03:14:47,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:14:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:47,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062887960] [2020-04-18 03:14:47,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737985760] [2020-04-18 03:14:47,189 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 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 [2020-04-18 03:14:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:14:47,237 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:14:47,238 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:14:55,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:55,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:14:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:14:55,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:14:55,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-04-18 03:14:55,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749707553] [2020-04-18 03:14:55,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 03:14:55,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:14:55,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 03:14:55,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=271, Unknown=1, NotChecked=0, Total=342 [2020-04-18 03:14:55,648 INFO L87 Difference]: Start difference. First operand 4407 states and 12177 transitions. Second operand 19 states. [2020-04-18 03:14:59,931 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-04-18 03:15:03,184 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-04-18 03:15:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:15:12,101 INFO L93 Difference]: Finished difference Result 8388 states and 22333 transitions. [2020-04-18 03:15:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-04-18 03:15:12,102 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-04-18 03:15:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:15:12,112 INFO L225 Difference]: With dead ends: 8388 [2020-04-18 03:15:12,112 INFO L226 Difference]: Without dead ends: 8024 [2020-04-18 03:15:12,113 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=625, Invalid=2563, Unknown=4, NotChecked=0, Total=3192 [2020-04-18 03:15:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2020-04-18 03:15:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 4507. [2020-04-18 03:15:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4507 states. [2020-04-18 03:15:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 12517 transitions. [2020-04-18 03:15:12,206 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 12517 transitions. Word has length 52 [2020-04-18 03:15:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:15:12,207 INFO L479 AbstractCegarLoop]: Abstraction has 4507 states and 12517 transitions. [2020-04-18 03:15:12,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 03:15:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 12517 transitions. [2020-04-18 03:15:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 03:15:12,214 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:15:12,214 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:15:12,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:15:12,415 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:15:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:15:12,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1136751595, now seen corresponding path program 3 times [2020-04-18 03:15:12,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:15:12,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749962464] [2020-04-18 03:15:12,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:15:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:15:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:15:12,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749962464] [2020-04-18 03:15:12,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116263057] [2020-04-18 03:15:12,624 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 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 [2020-04-18 03:15:12,670 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-04-18 03:15:12,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:15:12,671 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:15:12,671 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:15:12,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:15:21,009 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-04-18 03:15:21,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:15:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:15:21,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:15:21,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2020-04-18 03:15:21,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329943426] [2020-04-18 03:15:21,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:15:21,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:15:21,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:15:21,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=306, Unknown=2, NotChecked=0, Total=380 [2020-04-18 03:15:21,025 INFO L87 Difference]: Start difference. First operand 4507 states and 12517 transitions. Second operand 20 states. [2020-04-18 03:15:32,330 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-04-18 03:15:57,008 WARN L192 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-04-18 03:16:11,288 WARN L192 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-04-18 03:16:25,645 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-04-18 03:17:18,918 WARN L192 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-04-18 03:17:53,321 WARN L192 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 35 DAG size of output: 30 Received shutdown request... [2020-04-18 03:18:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-04-18 03:18:01,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:01,643 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 03:18:01,651 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 03:18:01,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:18:01 BasicIcfg [2020-04-18 03:18:01,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:18:01,654 INFO L168 Benchmark]: Toolchain (without parser) took 279276.45 ms. Allocated memory was 137.4 MB in the beginning and 719.8 MB in the end (delta: 582.5 MB). Free memory was 100.5 MB in the beginning and 498.0 MB in the end (delta: -397.5 MB). Peak memory consumption was 184.9 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,655 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.50 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 98.6 MB in the beginning and 160.1 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 201.3 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,665 INFO L168 Benchmark]: Boogie Preprocessor took 37.31 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,665 INFO L168 Benchmark]: RCFGBuilder took 446.22 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 136.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,666 INFO L168 Benchmark]: TraceAbstraction took 278078.19 ms. Allocated memory was 201.3 MB in the beginning and 719.8 MB in the end (delta: 518.5 MB). Free memory was 136.4 MB in the beginning and 498.0 MB in the end (delta: -361.6 MB). Peak memory consumption was 156.9 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:01,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.50 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 98.6 MB in the beginning and 160.1 MB in the end (delta: -61.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 201.3 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.31 ms. Allocated memory is still 201.3 MB. Free memory was 158.1 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.22 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 136.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 278078.19 ms. Allocated memory was 201.3 MB in the beginning and 719.8 MB in the end (delta: 518.5 MB). Free memory was 136.4 MB in the beginning and 498.0 MB in the end (delta: -361.6 MB). Peak memory consumption was 156.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (4507states) and FLOYD_HOARE automaton (currently 51 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (6648 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 277.9s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 245.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 2699 SDtfs, 17851 SDslu, 30573 SDs, 0 SdLazy, 5438 SolverSat, 1281 SolverUnsat, 124 SolverUnknown, 0 SolverNotchecked, 136.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1607 GetRequests, 673 SyntacticMatches, 7 SemanticMatches, 927 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15805 ImplicationChecksByTransitivity, 129.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4507occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 45108 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 1615 NumberOfCodeBlocks, 1615 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1580 ConstructedInterpolants, 33 QuantifiedInterpolants, 818725 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1784 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 35 InterpolantComputations, 3 PerfectInterpolantSequences, 0/514 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown