/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:52:12,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:52:12,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:52:12,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:52:12,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:52:12,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:52:12,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:52:12,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:52:12,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:52:12,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:52:12,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:52:12,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:52:12,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:52:12,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:52:12,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:52:12,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:52:12,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:52:12,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:52:12,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:52:12,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:52:12,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:52:12,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:52:12,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:52:12,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:52:12,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:52:12,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:52:12,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:52:12,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:52:12,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:52:12,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:52:12,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:52:12,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:52:12,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:52:12,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:52:12,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:52:12,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:52:12,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:52:12,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:52:12,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:52:12,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:52:12,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:52:12,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 06:52:12,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:52:12,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:52:12,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:52:12,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:52:12,981 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:52:12,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:52:12,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:52:12,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:52:12,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:52:12,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:52:12,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:52:12,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:52:12,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:52:12,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:52:12,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:52:12,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:52:12,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:52:12,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:52:12,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:52:12,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:52:12,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:52:12,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:52:12,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:52:12,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:52:12,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:52:12,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:52:12,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:52:12,985 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:52:12,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:52:12,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:52:13,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:52:13,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:52:13,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:52:13,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:52:13,269 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:52:13,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-18 06:52:13,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60db63985/1c7088dd9cac48b38dfbd2edf3f2ebac/FLAGa16fb4578 [2020-04-18 06:52:13,915 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:52:13,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-18 06:52:13,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60db63985/1c7088dd9cac48b38dfbd2edf3f2ebac/FLAGa16fb4578 [2020-04-18 06:52:14,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60db63985/1c7088dd9cac48b38dfbd2edf3f2ebac [2020-04-18 06:52:14,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:52:14,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:52:14,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:52:14,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:52:14,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:52:14,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:14,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14, skipping insertion in model container [2020-04-18 06:52:14,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:14,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:52:14,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:52:14,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:52:14,824 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:52:14,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:52:14,985 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:52:14,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14 WrapperNode [2020-04-18 06:52:14,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:52:14,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:52:14,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:52:14,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:52:14,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:52:15,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:52:15,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:52:15,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:52:15,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (1/1) ... [2020-04-18 06:52:15,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:52:15,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:52:15,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:52:15,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:52:15,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (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 06:52:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:52:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:52:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:52:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:52:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:52:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:52:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:52:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:52:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:52:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:52:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:52:15,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:52:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:52:15,129 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 06:52:15,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:52:15,524 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:52:15,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:52:15 BoogieIcfgContainer [2020-04-18 06:52:15,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:52:15,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:52:15,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:52:15,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:52:15,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:52:14" (1/3) ... [2020-04-18 06:52:15,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52127330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:52:15, skipping insertion in model container [2020-04-18 06:52:15,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:52:14" (2/3) ... [2020-04-18 06:52:15,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52127330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:52:15, skipping insertion in model container [2020-04-18 06:52:15,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:52:15" (3/3) ... [2020-04-18 06:52:15,538 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-04-18 06:52:15,548 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:52:15,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:52:15,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:52:15,556 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:52:15,580 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,580 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,580 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,581 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,581 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,582 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,583 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,583 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,583 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,584 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,584 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,584 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,585 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,585 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,585 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,586 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,590 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,590 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,591 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,591 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,597 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,597 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,598 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,598 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,600 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,600 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,601 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,601 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:52:15,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:52:15,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:52:15,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:52:15,639 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:52:15,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:52:15,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:52:15,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:52:15,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:52:15,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:52:15,653 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 06:52:16,118 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 06:52:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 06:52:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:52:16,153 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:16,155 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:16,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 06:52:16,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:16,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882800378] [2020-04-18 06:52:16,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:16,658 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 06:52:16,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882800378] [2020-04-18 06:52:16,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:16,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:16,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676397097] [2020-04-18 06:52:16,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:16,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:16,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:16,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:16,686 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 06:52:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:17,307 INFO L93 Difference]: Finished difference Result 15282 states and 52285 transitions. [2020-04-18 06:52:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:52:17,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 06:52:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:17,388 INFO L225 Difference]: With dead ends: 15282 [2020-04-18 06:52:17,389 INFO L226 Difference]: Without dead ends: 4092 [2020-04-18 06:52:17,392 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:52:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2020-04-18 06:52:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 3612. [2020-04-18 06:52:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-04-18 06:52:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 11709 transitions. [2020-04-18 06:52:17,650 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 11709 transitions. Word has length 36 [2020-04-18 06:52:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:17,652 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 11709 transitions. [2020-04-18 06:52:17,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 11709 transitions. [2020-04-18 06:52:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:52:17,665 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:17,666 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:17,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:17,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2079713957, now seen corresponding path program 1 times [2020-04-18 06:52:17,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:17,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774360960] [2020-04-18 06:52:17,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:17,946 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 06:52:17,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774360960] [2020-04-18 06:52:17,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:17,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:17,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268153365] [2020-04-18 06:52:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:17,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:17,950 INFO L87 Difference]: Start difference. First operand 3612 states and 11709 transitions. Second operand 7 states. [2020-04-18 06:52:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:18,222 INFO L93 Difference]: Finished difference Result 4426 states and 14216 transitions. [2020-04-18 06:52:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:52:18,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 06:52:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:18,249 INFO L225 Difference]: With dead ends: 4426 [2020-04-18 06:52:18,250 INFO L226 Difference]: Without dead ends: 3866 [2020-04-18 06:52:18,251 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:52:18,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2020-04-18 06:52:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3012. [2020-04-18 06:52:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2020-04-18 06:52:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 9699 transitions. [2020-04-18 06:52:18,360 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 9699 transitions. Word has length 41 [2020-04-18 06:52:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:18,363 INFO L479 AbstractCegarLoop]: Abstraction has 3012 states and 9699 transitions. [2020-04-18 06:52:18,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 9699 transitions. [2020-04-18 06:52:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:52:18,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:18,375 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:18,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:18,375 INFO L82 PathProgramCache]: Analyzing trace with hash 991033051, now seen corresponding path program 1 times [2020-04-18 06:52:18,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:18,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191109010] [2020-04-18 06:52:18,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:18,578 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 06:52:18,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191109010] [2020-04-18 06:52:18,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:18,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:18,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964037180] [2020-04-18 06:52:18,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:18,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:18,581 INFO L87 Difference]: Start difference. First operand 3012 states and 9699 transitions. Second operand 7 states. [2020-04-18 06:52:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:18,928 INFO L93 Difference]: Finished difference Result 5482 states and 17325 transitions. [2020-04-18 06:52:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:52:18,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 06:52:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:18,953 INFO L225 Difference]: With dead ends: 5482 [2020-04-18 06:52:18,954 INFO L226 Difference]: Without dead ends: 3432 [2020-04-18 06:52:18,954 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:52:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2020-04-18 06:52:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2536. [2020-04-18 06:52:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-04-18 06:52:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 8087 transitions. [2020-04-18 06:52:19,059 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 8087 transitions. Word has length 41 [2020-04-18 06:52:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:19,060 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 8087 transitions. [2020-04-18 06:52:19,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 8087 transitions. [2020-04-18 06:52:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:52:19,068 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:19,068 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:19,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1483833500, now seen corresponding path program 1 times [2020-04-18 06:52:19,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:19,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410678881] [2020-04-18 06:52:19,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:19,221 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 06:52:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410678881] [2020-04-18 06:52:19,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:19,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:19,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927977538] [2020-04-18 06:52:19,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:19,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:19,223 INFO L87 Difference]: Start difference. First operand 2536 states and 8087 transitions. Second operand 7 states. [2020-04-18 06:52:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:19,514 INFO L93 Difference]: Finished difference Result 3916 states and 12346 transitions. [2020-04-18 06:52:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:52:19,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 06:52:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:19,559 INFO L225 Difference]: With dead ends: 3916 [2020-04-18 06:52:19,561 INFO L226 Difference]: Without dead ends: 3376 [2020-04-18 06:52:19,561 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 06:52:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-04-18 06:52:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2536. [2020-04-18 06:52:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-04-18 06:52:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 8059 transitions. [2020-04-18 06:52:19,642 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 8059 transitions. Word has length 43 [2020-04-18 06:52:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:19,643 INFO L479 AbstractCegarLoop]: Abstraction has 2536 states and 8059 transitions. [2020-04-18 06:52:19,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 8059 transitions. [2020-04-18 06:52:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:52:19,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:19,650 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:19,651 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:19,651 INFO L82 PathProgramCache]: Analyzing trace with hash 263373782, now seen corresponding path program 2 times [2020-04-18 06:52:19,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:19,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809160922] [2020-04-18 06:52:19,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:19,856 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 06:52:19,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809160922] [2020-04-18 06:52:19,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:19,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:19,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275634417] [2020-04-18 06:52:19,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:19,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:19,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:19,858 INFO L87 Difference]: Start difference. First operand 2536 states and 8059 transitions. Second operand 7 states. [2020-04-18 06:52:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:20,032 INFO L93 Difference]: Finished difference Result 2928 states and 9173 transitions. [2020-04-18 06:52:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:52:20,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 06:52:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:20,038 INFO L225 Difference]: With dead ends: 2928 [2020-04-18 06:52:20,038 INFO L226 Difference]: Without dead ends: 1338 [2020-04-18 06:52:20,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 06:52:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-04-18 06:52:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2020-04-18 06:52:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-04-18 06:52:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4013 transitions. [2020-04-18 06:52:20,076 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4013 transitions. Word has length 43 [2020-04-18 06:52:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:20,077 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 4013 transitions. [2020-04-18 06:52:20,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4013 transitions. [2020-04-18 06:52:20,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:52:20,081 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:20,081 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:20,081 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1879965384, now seen corresponding path program 1 times [2020-04-18 06:52:20,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:20,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072255757] [2020-04-18 06:52:20,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:20,179 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 06:52:20,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072255757] [2020-04-18 06:52:20,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:20,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:52:20,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067766483] [2020-04-18 06:52:20,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:52:20,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:20,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:52:20,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:52:20,182 INFO L87 Difference]: Start difference. First operand 1338 states and 4013 transitions. Second operand 6 states. [2020-04-18 06:52:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:20,294 INFO L93 Difference]: Finished difference Result 1559 states and 4618 transitions. [2020-04-18 06:52:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:52:20,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-04-18 06:52:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:20,304 INFO L225 Difference]: With dead ends: 1559 [2020-04-18 06:52:20,304 INFO L226 Difference]: Without dead ends: 1183 [2020-04-18 06:52:20,305 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:52:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-04-18 06:52:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2020-04-18 06:52:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-04-18 06:52:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 3483 transitions. [2020-04-18 06:52:20,346 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 3483 transitions. Word has length 44 [2020-04-18 06:52:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:20,347 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 3483 transitions. [2020-04-18 06:52:20,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:52:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 3483 transitions. [2020-04-18 06:52:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 06:52:20,350 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:20,351 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:20,351 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:20,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2017855929, now seen corresponding path program 1 times [2020-04-18 06:52:20,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:20,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220995039] [2020-04-18 06:52:20,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:20,504 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 06:52:20,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220995039] [2020-04-18 06:52:20,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:20,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:52:20,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714962615] [2020-04-18 06:52:20,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:52:20,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:52:20,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:52:20,507 INFO L87 Difference]: Start difference. First operand 1183 states and 3483 transitions. Second operand 7 states. [2020-04-18 06:52:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:20,634 INFO L93 Difference]: Finished difference Result 1069 states and 3044 transitions. [2020-04-18 06:52:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:52:20,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 06:52:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:20,637 INFO L225 Difference]: With dead ends: 1069 [2020-04-18 06:52:20,638 INFO L226 Difference]: Without dead ends: 793 [2020-04-18 06:52:20,638 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:52:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-04-18 06:52:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2020-04-18 06:52:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-04-18 06:52:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2203 transitions. [2020-04-18 06:52:20,659 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2203 transitions. Word has length 45 [2020-04-18 06:52:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:20,660 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 2203 transitions. [2020-04-18 06:52:20,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:52:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2203 transitions. [2020-04-18 06:52:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:52:20,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:52:20,662 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:52:20,662 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:52:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:52:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1572381084, now seen corresponding path program 1 times [2020-04-18 06:52:20,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:52:20,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823508313] [2020-04-18 06:52:20,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:52:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:52:20,760 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 06:52:20,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823508313] [2020-04-18 06:52:20,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:52:20,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:52:20,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324085124] [2020-04-18 06:52:20,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:52:20,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:52:20,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:52:20,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:52:20,763 INFO L87 Difference]: Start difference. First operand 793 states and 2203 transitions. Second operand 8 states. [2020-04-18 06:52:20,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:52:20,862 INFO L93 Difference]: Finished difference Result 496 states and 1312 transitions. [2020-04-18 06:52:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:52:20,863 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-04-18 06:52:20,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:52:20,863 INFO L225 Difference]: With dead ends: 496 [2020-04-18 06:52:20,863 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:52:20,864 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:52:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:52:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:52:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:52:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:52:20,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 06:52:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:52:20,865 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:52:20,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:52:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:52:20,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:52:20,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:52:20 BasicIcfg [2020-04-18 06:52:20,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:52:20,877 INFO L168 Benchmark]: Toolchain (without parser) took 6665.82 ms. Allocated memory was 145.2 MB in the beginning and 323.0 MB in the end (delta: 177.7 MB). Free memory was 101.9 MB in the beginning and 68.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,878 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.45 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.0 MB in the beginning and 157.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.81 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 154.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,881 INFO L168 Benchmark]: Boogie Preprocessor took 25.60 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,897 INFO L168 Benchmark]: RCFGBuilder took 464.06 ms. Allocated memory is still 202.4 MB. Free memory was 153.4 MB in the beginning and 131.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,899 INFO L168 Benchmark]: TraceAbstraction took 5343.15 ms. Allocated memory was 202.4 MB in the beginning and 323.0 MB in the end (delta: 120.6 MB). Free memory was 131.0 MB in the beginning and 68.3 MB in the end (delta: 62.8 MB). Peak memory consumption was 183.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:52:20,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.45 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.0 MB in the beginning and 157.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.81 ms. Allocated memory is still 202.4 MB. Free memory was 157.5 MB in the beginning and 154.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.60 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 153.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.06 ms. Allocated memory is still 202.4 MB. Free memory was 153.4 MB in the beginning and 131.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5343.15 ms. Allocated memory was 202.4 MB in the beginning and 323.0 MB in the end (delta: 120.6 MB). Free memory was 131.0 MB in the beginning and 68.3 MB in the end (delta: 62.8 MB). Peak memory consumption was 183.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 693 SDtfs, 1267 SDslu, 2429 SDs, 0 SdLazy, 331 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 3070 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 59043 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...