/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/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:05:18,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:05:18,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:05:18,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:05:18,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:05:18,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:05:18,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:05:18,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:05:18,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:05:18,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:05:18,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:05:18,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:05:18,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:05:18,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:05:18,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:05:18,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:05:18,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:05:18,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:05:18,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:05:18,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:05:18,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:05:18,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:05:18,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:05:18,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:05:18,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:05:18,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:05:18,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:05:18,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:05:18,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:05:18,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:05:19,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:05:19,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:05:19,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:05:19,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:05:19,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:05:19,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:05:19,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:05:19,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:05:19,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:05:19,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:05:19,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:05:19,007 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 02:05:19,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:05:19,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:05:19,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:05:19,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:05:19,034 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:05:19,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:05:19,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:05:19,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:05:19,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:05:19,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:05:19,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:05:19,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:05:19,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:05:19,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:05:19,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:05:19,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:05:19,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:05:19,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:05:19,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:05:19,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:05:19,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:05:19,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:05:19,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:05:19,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:05:19,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:05:19,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:05:19,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:05:19,039 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:05:19,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:05:19,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:05:19,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:05:19,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:05:19,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:05:19,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:05:19,322 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:05:19,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2020-04-18 02:05:19,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbbac9a80/799c31650d8f4636a8e2f2c1c7792fc2/FLAG584da1696 [2020-04-18 02:05:19,928 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:05:19,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2020-04-18 02:05:19,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbbac9a80/799c31650d8f4636a8e2f2c1c7792fc2/FLAG584da1696 [2020-04-18 02:05:20,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbbac9a80/799c31650d8f4636a8e2f2c1c7792fc2 [2020-04-18 02:05:20,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:05:20,245 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:05:20,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:05:20,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:05:20,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:05:20,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:05:20" (1/1) ... [2020-04-18 02:05:20,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2533a463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:20, skipping insertion in model container [2020-04-18 02:05:20,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:05:20" (1/1) ... [2020-04-18 02:05:20,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:05:20,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:05:20,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:05:20,890 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:05:20,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:05:21,022 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:05:21,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21 WrapperNode [2020-04-18 02:05:21,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:05:21,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:05:21,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:05:21,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:05:21,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:05:21,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:05:21,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:05:21,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:05:21,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (1/1) ... [2020-04-18 02:05:21,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:05:21,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:05:21,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:05:21,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:05:21,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (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 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:05:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:05:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:05:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:05:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:05:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:05:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:05:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:05:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:05:21,186 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 02:05:21,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:05:21,614 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:05:21,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:05:21 BoogieIcfgContainer [2020-04-18 02:05:21,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:05:21,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:05:21,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:05:21,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:05:21,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:05:20" (1/3) ... [2020-04-18 02:05:21,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18aa2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:05:21, skipping insertion in model container [2020-04-18 02:05:21,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:21" (2/3) ... [2020-04-18 02:05:21,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18aa2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:05:21, skipping insertion in model container [2020-04-18 02:05:21,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:05:21" (3/3) ... [2020-04-18 02:05:21,628 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2020-04-18 02:05:21,639 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:05:21,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:05:21,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:05:21,648 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:05:21,677 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,678 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,678 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,678 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,680 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,681 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,682 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,682 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,682 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,683 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,683 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,683 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,688 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,688 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,689 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,689 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,696 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,696 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,697 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,697 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,699 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,700 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,700 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,700 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:21,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:05:21,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:05:21,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:05:21,740 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:05:21,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:05:21,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:05:21,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:05:21,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:05:21,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:05:21,757 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:21,759 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:21,805 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:05:21,805 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:05:21,811 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:05:21,814 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:21,836 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:05:21,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:05:21,837 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:05:21,840 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:05:21,841 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:05:23,248 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:05:23,440 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:05:23,440 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:05:23,446 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:05:23,491 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:05:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:05:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:05:23,507 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:23,508 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:23,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:23,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:05:23,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:23,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643150424] [2020-04-18 02:05:23,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:23,773 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 02:05:23,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643150424] [2020-04-18 02:05:23,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:23,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:05:23,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618000917] [2020-04-18 02:05:23,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:05:23,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:23,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:05:23,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:05:23,799 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:05:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:23,844 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:05:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:05:23,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:05:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:23,883 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:05:23,884 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:05:23,885 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 02:05:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:05:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:05:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:05:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:05:23,982 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:05:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:23,984 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:05:23,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:05:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:05:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:05:23,986 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:23,986 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:23,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:23,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1613616234, now seen corresponding path program 1 times [2020-04-18 02:05:23,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:23,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523578535] [2020-04-18 02:05:23,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,078 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 02:05:24,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523578535] [2020-04-18 02:05:24,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:24,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925584770] [2020-04-18 02:05:24,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,083 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:05:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,144 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:05:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:24,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:05:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,151 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:05:24,151 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:05:24,153 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 02:05:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:05:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:05:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:05:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:05:24,185 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:05:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,186 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:05:24,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:05:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:05:24,187 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,188 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1111108671, now seen corresponding path program 1 times [2020-04-18 02:05:24,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554248686] [2020-04-18 02:05:24,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,258 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 02:05:24,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554248686] [2020-04-18 02:05:24,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:24,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204441803] [2020-04-18 02:05:24,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,261 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:05:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,299 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 02:05:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:24,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:05:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,302 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:05:24,302 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:05:24,302 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:05:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 02:05:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 02:05:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 02:05:24,315 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 02:05:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,315 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 02:05:24,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 02:05:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:05:24,320 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,320 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,320 INFO L82 PathProgramCache]: Analyzing trace with hash -143018253, now seen corresponding path program 1 times [2020-04-18 02:05:24,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398964065] [2020-04-18 02:05:24,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,404 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 02:05:24,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398964065] [2020-04-18 02:05:24,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:24,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742304818] [2020-04-18 02:05:24,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,407 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-04-18 02:05:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,448 INFO L93 Difference]: Finished difference Result 262 states and 666 transitions. [2020-04-18 02:05:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:24,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:05:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,452 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:05:24,452 INFO L226 Difference]: Without dead ends: 174 [2020-04-18 02:05:24,453 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 02:05:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-04-18 02:05:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-04-18 02:05:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-04-18 02:05:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 438 transitions. [2020-04-18 02:05:24,472 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 438 transitions. Word has length 12 [2020-04-18 02:05:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,472 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 438 transitions. [2020-04-18 02:05:24,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 438 transitions. [2020-04-18 02:05:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:05:24,475 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,475 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,476 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 2 times [2020-04-18 02:05:24,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913127357] [2020-04-18 02:05:24,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,556 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 02:05:24,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913127357] [2020-04-18 02:05:24,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:24,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449960633] [2020-04-18 02:05:24,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,562 INFO L87 Difference]: Start difference. First operand 174 states and 438 transitions. Second operand 4 states. [2020-04-18 02:05:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,585 INFO L93 Difference]: Finished difference Result 226 states and 556 transitions. [2020-04-18 02:05:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:24,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:05:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,587 INFO L225 Difference]: With dead ends: 226 [2020-04-18 02:05:24,588 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 02:05:24,589 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 02:05:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 02:05:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 02:05:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 02:05:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 261 transitions. [2020-04-18 02:05:24,602 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 261 transitions. Word has length 12 [2020-04-18 02:05:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,602 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 261 transitions. [2020-04-18 02:05:24,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 261 transitions. [2020-04-18 02:05:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:24,603 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,604 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,604 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,604 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 1 times [2020-04-18 02:05:24,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843624432] [2020-04-18 02:05:24,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,667 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 02:05:24,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843624432] [2020-04-18 02:05:24,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:24,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816302213] [2020-04-18 02:05:24,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,669 INFO L87 Difference]: Start difference. First operand 112 states and 261 transitions. Second operand 4 states. [2020-04-18 02:05:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,690 INFO L93 Difference]: Finished difference Result 128 states and 293 transitions. [2020-04-18 02:05:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:05:24,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:05:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,692 INFO L225 Difference]: With dead ends: 128 [2020-04-18 02:05:24,692 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 02:05:24,692 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 02:05:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 02:05:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 02:05:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 02:05:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 203 transitions. [2020-04-18 02:05:24,696 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 203 transitions. Word has length 14 [2020-04-18 02:05:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,697 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 203 transitions. [2020-04-18 02:05:24,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 203 transitions. [2020-04-18 02:05:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:24,697 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,698 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,698 INFO L82 PathProgramCache]: Analyzing trace with hash 652264502, now seen corresponding path program 2 times [2020-04-18 02:05:24,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219269272] [2020-04-18 02:05:24,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,749 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 02:05:24,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219269272] [2020-04-18 02:05:24,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:24,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673682357] [2020-04-18 02:05:24,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:24,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:24,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:24,751 INFO L87 Difference]: Start difference. First operand 92 states and 203 transitions. Second operand 4 states. [2020-04-18 02:05:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,775 INFO L93 Difference]: Finished difference Result 116 states and 255 transitions. [2020-04-18 02:05:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:05:24,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:05:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,776 INFO L225 Difference]: With dead ends: 116 [2020-04-18 02:05:24,776 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 02:05:24,777 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 02:05:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 02:05:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 02:05:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 02:05:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-18 02:05:24,780 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 14 [2020-04-18 02:05:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,781 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-18 02:05:24,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 02:05:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:24,781 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:24,782 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:24,782 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:24,782 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 3 times [2020-04-18 02:05:24,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:24,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739629077] [2020-04-18 02:05:24,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:24,826 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 02:05:24,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739629077] [2020-04-18 02:05:24,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:24,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:24,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577318329] [2020-04-18 02:05:24,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:05:24,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:05:24,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:05:24,828 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 3 states. [2020-04-18 02:05:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:24,838 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-18 02:05:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:05:24,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:05:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:24,838 INFO L225 Difference]: With dead ends: 74 [2020-04-18 02:05:24,839 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:05:24,839 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 02:05:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:05:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:05:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:05:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:05:24,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:05:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:24,840 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:05:24,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:05:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:05:24,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:05:24,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:05:24 BasicIcfg [2020-04-18 02:05:24,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:05:24,847 INFO L168 Benchmark]: Toolchain (without parser) took 4617.00 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 101.4 MB in the beginning and 208.8 MB in the end (delta: -107.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:24,847 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:05:24,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.99 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 156.6 MB in the end (delta: -57.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:24,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.63 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:24,850 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 153.7 MB in the end (delta: 994.4 kB). Peak memory consumption was 994.4 kB. Max. memory is 7.1 GB. [2020-04-18 02:05:24,850 INFO L168 Benchmark]: RCFGBuilder took 491.88 ms. Allocated memory is still 202.4 MB. Free memory was 152.7 MB in the beginning and 131.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:24,851 INFO L168 Benchmark]: TraceAbstraction took 3224.30 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 130.2 MB in the beginning and 208.8 MB in the end (delta: -78.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:05:24,855 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.99 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 156.6 MB in the end (delta: -57.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.63 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.50 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 153.7 MB in the end (delta: 994.4 kB). Peak memory consumption was 994.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 491.88 ms. Allocated memory is still 202.4 MB. Free memory was 152.7 MB in the beginning and 131.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3224.30 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 130.2 MB in the beginning and 208.8 MB in the end (delta: -78.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 171 SDtfs, 114 SDslu, 165 SDs, 0 SdLazy, 65 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2639 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...