/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:04,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:04,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:04,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:04,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:04,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:04,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:04,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:04,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:04,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:04,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:04,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:04,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:04,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:04,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:04,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:04,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:04,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:04,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:04,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:04,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:04,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:04,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:04,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:04,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:04,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:04,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:04,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:04,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:04,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:04,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:04,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:04,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:04,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:04,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:04,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:04,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:04,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:04,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:04,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:04,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:04,984 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-VariableLbe.epf [2020-04-18 02:24:04,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:05,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:05,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:05,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:05,003 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:05,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:05,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:05,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:05,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:05,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:05,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:05,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:05,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:05,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:05,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:05,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:05,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:05,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:05,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:05,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:05,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:05,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:05,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:05,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:05,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:05,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:05,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:05,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:05,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:05,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:05,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:05,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:05,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:05,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:05,321 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:05,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-04-18 02:24:05,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5d5b591/97d11d1ddc5545a6849505f8d58142a6/FLAG7f1c620ca [2020-04-18 02:24:05,991 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:05,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-04-18 02:24:06,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5d5b591/97d11d1ddc5545a6849505f8d58142a6/FLAG7f1c620ca [2020-04-18 02:24:06,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5d5b591/97d11d1ddc5545a6849505f8d58142a6 [2020-04-18 02:24:06,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:06,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:06,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:06,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:06,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:06,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:06,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d026c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06, skipping insertion in model container [2020-04-18 02:24:06,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:06,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:06,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:06,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:06,823 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:06,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:06,971 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:06,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06 WrapperNode [2020-04-18 02:24:06,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:06,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:06,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:06,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:06,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:07,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:07,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:07,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:07,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (1/1) ... [2020-04-18 02:24:07,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:07,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:07,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:07,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:07,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (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 02:24:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:07,121 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 02:24:07,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:07,512 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:07,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:07 BoogieIcfgContainer [2020-04-18 02:24:07,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:07,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:07,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:07,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:07,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:06" (1/3) ... [2020-04-18 02:24:07,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1398c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:07, skipping insertion in model container [2020-04-18 02:24:07,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:06" (2/3) ... [2020-04-18 02:24:07,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1398c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:07, skipping insertion in model container [2020-04-18 02:24:07,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:07" (3/3) ... [2020-04-18 02:24:07,531 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-04-18 02:24:07,539 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:07,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:07,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:07,547 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:07,573 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,573 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,573 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,574 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,574 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,575 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,575 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,575 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,576 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,576 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,576 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,577 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,577 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,577 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,578 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,578 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,578 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,579 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,583 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,583 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,583 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,584 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,590 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,590 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,591 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,591 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,594 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,594 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,594 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,594 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:07,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:24:07,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:07,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:07,635 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:07,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:07,635 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:07,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:07,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:07,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:07,651 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:07,652 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:07,694 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:24:07,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:07,700 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:24:07,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:24:07,724 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:24:07,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:07,725 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:24:07,727 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:24:07,728 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:09,177 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-04-18 02:24:09,178 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:24:09,181 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:24:09,207 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:24:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:24:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:24:09,217 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:09,218 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:09,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-04-18 02:24:09,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:09,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130090980] [2020-04-18 02:24:09,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:09,454 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 02:24:09,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130090980] [2020-04-18 02:24:09,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:09,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:24:09,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086857598] [2020-04-18 02:24:09,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:09,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:09,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:09,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:09,479 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:24:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:09,529 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:24:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:09,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:24:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:09,564 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:24:09,571 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:24:09,573 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:24:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:24:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:24:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:24:09,658 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:24:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:09,659 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:24:09,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:24:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:24:09,661 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:09,661 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:09,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1359379978, now seen corresponding path program 1 times [2020-04-18 02:24:09,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:09,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701130938] [2020-04-18 02:24:09,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:09,766 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 02:24:09,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701130938] [2020-04-18 02:24:09,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:09,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:09,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877886885] [2020-04-18 02:24:09,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:09,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:09,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:09,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:09,770 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:24:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:09,804 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:24:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:09,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:24:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:09,810 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:24:09,810 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:24:09,811 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:24:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:24:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:24:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:24:09,827 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:24:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:09,827 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:24:09,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:24:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:09,829 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:09,829 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:09,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:09,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:09,830 INFO L82 PathProgramCache]: Analyzing trace with hash 415019454, now seen corresponding path program 1 times [2020-04-18 02:24:09,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:09,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855772647] [2020-04-18 02:24:09,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:09,887 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 02:24:09,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855772647] [2020-04-18 02:24:09,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:09,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:09,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538807224] [2020-04-18 02:24:09,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:09,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:09,889 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:24:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:09,928 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:24:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:09,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:24:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:09,930 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:24:09,931 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:24:09,931 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:24:09,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:24:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:24:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:24:09,945 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:24:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:09,946 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:24:09,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:24:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:09,947 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:09,947 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:09,948 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1558339042, now seen corresponding path program 1 times [2020-04-18 02:24:09,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:09,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648363832] [2020-04-18 02:24:09,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:09,996 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 02:24:09,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648363832] [2020-04-18 02:24:09,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:09,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:24:09,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709732739] [2020-04-18 02:24:09,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:09,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:09,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:09,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:09,999 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-18 02:24:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,007 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 02:24:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:10,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:24:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,009 INFO L225 Difference]: With dead ends: 144 [2020-04-18 02:24:10,009 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:24:10,010 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:24:10,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:24:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:24:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:24:10,019 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 02:24:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,019 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:24:10,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:24:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:10,021 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:10,021 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:10,021 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-04-18 02:24:10,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:10,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578336636] [2020-04-18 02:24:10,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:10,107 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 02:24:10,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578336636] [2020-04-18 02:24:10,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:10,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:10,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583746330] [2020-04-18 02:24:10,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:10,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:10,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:10,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:10,110 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:24:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,158 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:24:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:10,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,160 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:24:10,160 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:24:10,160 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:24:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:24:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:24:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:24:10,180 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:24:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,180 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:24:10,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:24:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:10,187 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:10,188 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:10,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-04-18 02:24:10,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:10,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607631958] [2020-04-18 02:24:10,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:10,282 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 02:24:10,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607631958] [2020-04-18 02:24:10,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:10,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:10,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241356193] [2020-04-18 02:24:10,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:10,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:10,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:10,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:10,285 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:24:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,335 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:24:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:10,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:24:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,338 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:24:10,338 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:24:10,339 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:24:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:24:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:24:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:24:10,343 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:24:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,343 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:24:10,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:24:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:10,344 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:10,345 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:10,345 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:10,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-04-18 02:24:10,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:10,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818377213] [2020-04-18 02:24:10,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:10,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818377213] [2020-04-18 02:24:10,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:10,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:10,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087841967] [2020-04-18 02:24:10,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:24:10,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:24:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:10,379 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:24:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,392 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:24:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:24:10,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:24:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,394 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:24:10,394 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:24:10,394 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:24:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:24:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:24:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:24:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:24:10,398 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:24:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,399 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:24:10,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:24:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:24:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:10,400 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:10,400 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:10,400 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:10,400 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-04-18 02:24:10,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:10,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721119605] [2020-04-18 02:24:10,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:10,446 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 02:24:10,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721119605] [2020-04-18 02:24:10,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:10,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:10,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820235697] [2020-04-18 02:24:10,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:10,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:10,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:10,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:10,449 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 4 states. [2020-04-18 02:24:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,472 INFO L93 Difference]: Finished difference Result 114 states and 219 transitions. [2020-04-18 02:24:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:24:10,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,474 INFO L225 Difference]: With dead ends: 114 [2020-04-18 02:24:10,474 INFO L226 Difference]: Without dead ends: 76 [2020-04-18 02:24:10,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-04-18 02:24:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-04-18 02:24:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-04-18 02:24:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2020-04-18 02:24:10,478 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 15 [2020-04-18 02:24:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,478 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2020-04-18 02:24:10,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2020-04-18 02:24:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:10,479 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:10,479 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:10,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-04-18 02:24:10,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:10,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098677002] [2020-04-18 02:24:10,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:10,571 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 02:24:10,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098677002] [2020-04-18 02:24:10,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:10,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:10,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070962777] [2020-04-18 02:24:10,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:10,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:10,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:10,577 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 6 states. [2020-04-18 02:24:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:10,614 INFO L93 Difference]: Finished difference Result 70 states and 129 transitions. [2020-04-18 02:24:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:10,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:24:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:10,615 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:24:10,615 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:10,616 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:10,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 02:24:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:10,618 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:10,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:10,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:10,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:10 BasicIcfg [2020-04-18 02:24:10,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:10,627 INFO L168 Benchmark]: Toolchain (without parser) took 4335.57 ms. Allocated memory was 136.8 MB in the beginning and 250.6 MB in the end (delta: 113.8 MB). Free memory was 99.9 MB in the beginning and 95.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,629 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.33 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 97.9 MB in the beginning and 157.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 200.8 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,637 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,638 INFO L168 Benchmark]: RCFGBuilder took 469.66 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,640 INFO L168 Benchmark]: TraceAbstraction took 3100.69 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 131.7 MB in the beginning and 95.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:10,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.33 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 97.9 MB in the beginning and 157.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 200.8 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.52 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.66 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3100.69 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 131.7 MB in the beginning and 95.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 172 SDtfs, 150 SDslu, 208 SDs, 0 SdLazy, 104 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...