/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/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:49:03,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:49:03,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:49:03,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:49:03,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:49:03,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:49:03,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:49:03,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:49:03,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:49:03,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:49:03,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:49:03,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:49:03,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:49:03,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:49:03,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:49:03,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:49:03,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:49:03,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:49:03,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:49:03,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:49:03,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:49:03,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:49:03,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:49:03,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:49:03,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:49:03,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:49:03,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:49:03,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:49:03,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:49:03,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:49:03,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:49:03,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:49:03,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:49:03,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:49:03,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:49:03,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:49:03,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:49:03,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:49:03,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:49:03,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:49:03,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:49:03,887 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 06:49:03,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:49:03,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:49:03,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:49:03,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:49:03,903 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:49:03,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:49:03,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:49:03,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:49:03,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:49:03,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:49:03,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:49:03,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:49:03,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:49:03,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:49:03,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:49:03,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:49:03,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:49:03,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:49:03,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:49:03,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:49:03,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:49:03,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:49:03,907 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:49:03,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:49:03,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:49:04,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:49:04,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:49:04,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:49:04,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:49:04,222 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:49:04,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 06:49:04,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e34ddc/c69d0fb11b134f798c323c737fbc2021/FLAG48bee34ed [2020-04-18 06:49:04,803 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:49:04,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 06:49:04,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e34ddc/c69d0fb11b134f798c323c737fbc2021/FLAG48bee34ed [2020-04-18 06:49:05,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5e34ddc/c69d0fb11b134f798c323c737fbc2021 [2020-04-18 06:49:05,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:49:05,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:49:05,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:49:05,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:49:05,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:49:05,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e13f8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05, skipping insertion in model container [2020-04-18 06:49:05,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:49:05,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:49:05,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:49:05,685 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:49:05,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:49:05,830 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:49:05,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05 WrapperNode [2020-04-18 06:49:05,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:49:05,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:49:05,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:49:05,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:49:05,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:49:05,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:49:05,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:49:05,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:49:05,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (1/1) ... [2020-04-18 06:49:05,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:49:05,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:49:05,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:49:05,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:49:05,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (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 06:49:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:49:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:49:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:49:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:49:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:49:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:49:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:49:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:49:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:49:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:49:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:49:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:49:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:49:05,979 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 06:49:06,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:49:06,355 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:49:06,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:49:06 BoogieIcfgContainer [2020-04-18 06:49:06,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:49:06,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:49:06,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:49:06,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:49:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:49:05" (1/3) ... [2020-04-18 06:49:06,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6d1ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:49:06, skipping insertion in model container [2020-04-18 06:49:06,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:05" (2/3) ... [2020-04-18 06:49:06,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6d1ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:49:06, skipping insertion in model container [2020-04-18 06:49:06,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:49:06" (3/3) ... [2020-04-18 06:49:06,367 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-04-18 06:49:06,377 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:49:06,377 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:49:06,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:49:06,385 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:49:06,409 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,409 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,409 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,410 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,410 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,410 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,411 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,411 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,412 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,412 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,412 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,412 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,413 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,413 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,413 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,414 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,414 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,414 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,419 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,419 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,419 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,420 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,426 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,426 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,427 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,427 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,430 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,430 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,430 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,430 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:49:06,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:49:06,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:49:06,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:49:06,467 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:49:06,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:49:06,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:49:06,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:49:06,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:49:06,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:49:06,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 06:49:06,929 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 06:49:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 06:49:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:49:06,963 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:06,964 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 06:49:06,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 1 times [2020-04-18 06:49:06,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:06,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885470405] [2020-04-18 06:49:06,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:07,434 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 06:49:07,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885470405] [2020-04-18 06:49:07,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:07,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:49:07,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685839504] [2020-04-18 06:49:07,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:49:07,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:07,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:49:07,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:49:07,458 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 06:49:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:08,037 INFO L93 Difference]: Finished difference Result 19746 states and 68130 transitions. [2020-04-18 06:49:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:49:08,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 06:49:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:08,119 INFO L225 Difference]: With dead ends: 19746 [2020-04-18 06:49:08,119 INFO L226 Difference]: Without dead ends: 6391 [2020-04-18 06:49:08,122 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:49:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2020-04-18 06:49:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 5311. [2020-04-18 06:49:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5311 states. [2020-04-18 06:49:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 17983 transitions. [2020-04-18 06:49:08,489 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 17983 transitions. Word has length 36 [2020-04-18 06:49:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:08,491 INFO L479 AbstractCegarLoop]: Abstraction has 5311 states and 17983 transitions. [2020-04-18 06:49:08,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:49:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 17983 transitions. [2020-04-18 06:49:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:49:08,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:08,506 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] [2020-04-18 06:49:08,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:08,508 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 1 times [2020-04-18 06:49:08,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:08,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495966853] [2020-04-18 06:49:08,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:08,805 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 06:49:08,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495966853] [2020-04-18 06:49:08,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:08,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:49:08,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504658609] [2020-04-18 06:49:08,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:49:08,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:08,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:49:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:49:08,818 INFO L87 Difference]: Start difference. First operand 5311 states and 17983 transitions. Second operand 6 states. [2020-04-18 06:49:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:09,062 INFO L93 Difference]: Finished difference Result 5871 states and 19716 transitions. [2020-04-18 06:49:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:49:09,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 06:49:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:09,105 INFO L225 Difference]: With dead ends: 5871 [2020-04-18 06:49:09,106 INFO L226 Difference]: Without dead ends: 4891 [2020-04-18 06:49:09,107 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:49:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2020-04-18 06:49:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4531. [2020-04-18 06:49:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2020-04-18 06:49:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 15289 transitions. [2020-04-18 06:49:09,299 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 15289 transitions. Word has length 38 [2020-04-18 06:49:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:09,299 INFO L479 AbstractCegarLoop]: Abstraction has 4531 states and 15289 transitions. [2020-04-18 06:49:09,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:49:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 15289 transitions. [2020-04-18 06:49:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:49:09,311 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:09,312 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] [2020-04-18 06:49:09,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1576932841, now seen corresponding path program 1 times [2020-04-18 06:49:09,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:09,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9979504] [2020-04-18 06:49:09,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:09,533 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 06:49:09,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9979504] [2020-04-18 06:49:09,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:09,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:49:09,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743476497] [2020-04-18 06:49:09,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:49:09,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:49:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:49:09,537 INFO L87 Difference]: Start difference. First operand 4531 states and 15289 transitions. Second operand 7 states. [2020-04-18 06:49:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:10,016 INFO L93 Difference]: Finished difference Result 6819 states and 22558 transitions. [2020-04-18 06:49:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:49:10,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 06:49:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:10,080 INFO L225 Difference]: With dead ends: 6819 [2020-04-18 06:49:10,080 INFO L226 Difference]: Without dead ends: 5311 [2020-04-18 06:49:10,081 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 06:49:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-04-18 06:49:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 4351. [2020-04-18 06:49:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4351 states. [2020-04-18 06:49:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 14605 transitions. [2020-04-18 06:49:10,267 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 14605 transitions. Word has length 38 [2020-04-18 06:49:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:10,267 INFO L479 AbstractCegarLoop]: Abstraction has 4351 states and 14605 transitions. [2020-04-18 06:49:10,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:49:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 14605 transitions. [2020-04-18 06:49:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:49:10,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:10,281 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] [2020-04-18 06:49:10,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:10,282 INFO L82 PathProgramCache]: Analyzing trace with hash 284208118, now seen corresponding path program 1 times [2020-04-18 06:49:10,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:10,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892309904] [2020-04-18 06:49:10,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:10,442 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 06:49:10,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892309904] [2020-04-18 06:49:10,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:10,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:49:10,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103994810] [2020-04-18 06:49:10,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:49:10,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:49:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:49:10,445 INFO L87 Difference]: Start difference. First operand 4351 states and 14605 transitions. Second operand 7 states. [2020-04-18 06:49:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:10,961 INFO L93 Difference]: Finished difference Result 6768 states and 22410 transitions. [2020-04-18 06:49:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 06:49:10,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:49:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:10,989 INFO L225 Difference]: With dead ends: 6768 [2020-04-18 06:49:10,989 INFO L226 Difference]: Without dead ends: 5508 [2020-04-18 06:49:10,990 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 06:49:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2020-04-18 06:49:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 4352. [2020-04-18 06:49:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4352 states. [2020-04-18 06:49:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14607 transitions. [2020-04-18 06:49:11,282 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14607 transitions. Word has length 40 [2020-04-18 06:49:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:11,282 INFO L479 AbstractCegarLoop]: Abstraction has 4352 states and 14607 transitions. [2020-04-18 06:49:11,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:49:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14607 transitions. [2020-04-18 06:49:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:49:11,293 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:11,293 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] [2020-04-18 06:49:11,293 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:11,294 INFO L82 PathProgramCache]: Analyzing trace with hash 422557874, now seen corresponding path program 2 times [2020-04-18 06:49:11,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:11,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458817850] [2020-04-18 06:49:11,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:11,450 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 06:49:11,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458817850] [2020-04-18 06:49:11,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:11,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:49:11,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549290040] [2020-04-18 06:49:11,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:49:11,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:11,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:49:11,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:49:11,452 INFO L87 Difference]: Start difference. First operand 4352 states and 14607 transitions. Second operand 8 states. [2020-04-18 06:49:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:11,686 INFO L93 Difference]: Finished difference Result 6350 states and 21002 transitions. [2020-04-18 06:49:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:49:11,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 06:49:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:11,698 INFO L225 Difference]: With dead ends: 6350 [2020-04-18 06:49:11,699 INFO L226 Difference]: Without dead ends: 3338 [2020-04-18 06:49:11,699 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:49:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-04-18 06:49:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2858. [2020-04-18 06:49:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-04-18 06:49:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 9228 transitions. [2020-04-18 06:49:11,796 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 9228 transitions. Word has length 40 [2020-04-18 06:49:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:11,797 INFO L479 AbstractCegarLoop]: Abstraction has 2858 states and 9228 transitions. [2020-04-18 06:49:11,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:49:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 9228 transitions. [2020-04-18 06:49:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:49:11,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:11,805 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 06:49:11,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash -56529516, now seen corresponding path program 1 times [2020-04-18 06:49:11,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:11,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343648229] [2020-04-18 06:49:11,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:11,957 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 06:49:11,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343648229] [2020-04-18 06:49:11,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:11,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:49:11,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39752756] [2020-04-18 06:49:11,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:49:11,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:11,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:49:11,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:49:11,960 INFO L87 Difference]: Start difference. First operand 2858 states and 9228 transitions. Second operand 6 states. [2020-04-18 06:49:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:12,106 INFO L93 Difference]: Finished difference Result 3621 states and 11508 transitions. [2020-04-18 06:49:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:49:12,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-04-18 06:49:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:12,117 INFO L225 Difference]: With dead ends: 3621 [2020-04-18 06:49:12,117 INFO L226 Difference]: Without dead ends: 2605 [2020-04-18 06:49:12,117 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 06:49:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-04-18 06:49:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2020-04-18 06:49:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2020-04-18 06:49:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 8281 transitions. [2020-04-18 06:49:12,238 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 8281 transitions. Word has length 41 [2020-04-18 06:49:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:12,239 INFO L479 AbstractCegarLoop]: Abstraction has 2605 states and 8281 transitions. [2020-04-18 06:49:12,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:49:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 8281 transitions. [2020-04-18 06:49:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:49:12,247 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:12,248 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] [2020-04-18 06:49:12,248 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1759947093, now seen corresponding path program 1 times [2020-04-18 06:49:12,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:12,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968347108] [2020-04-18 06:49:12,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:12,401 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 06:49:12,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968347108] [2020-04-18 06:49:12,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:12,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:49:12,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944358396] [2020-04-18 06:49:12,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:49:12,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:49:12,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:49:12,405 INFO L87 Difference]: Start difference. First operand 2605 states and 8281 transitions. Second operand 7 states. [2020-04-18 06:49:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:12,561 INFO L93 Difference]: Finished difference Result 2725 states and 8391 transitions. [2020-04-18 06:49:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:49:12,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 06:49:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:12,569 INFO L225 Difference]: With dead ends: 2725 [2020-04-18 06:49:12,569 INFO L226 Difference]: Without dead ends: 1873 [2020-04-18 06:49:12,570 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 06:49:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-04-18 06:49:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1873. [2020-04-18 06:49:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-04-18 06:49:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 5672 transitions. [2020-04-18 06:49:12,620 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 5672 transitions. Word has length 42 [2020-04-18 06:49:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:12,621 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 5672 transitions. [2020-04-18 06:49:12,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:49:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 5672 transitions. [2020-04-18 06:49:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:49:12,627 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:12,627 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 06:49:12,627 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:12,628 INFO L82 PathProgramCache]: Analyzing trace with hash -560928260, now seen corresponding path program 1 times [2020-04-18 06:49:12,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:12,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032537686] [2020-04-18 06:49:12,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:12,753 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 06:49:12,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032537686] [2020-04-18 06:49:12,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:12,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:49:12,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126643982] [2020-04-18 06:49:12,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:49:12,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:12,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:49:12,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:49:12,756 INFO L87 Difference]: Start difference. First operand 1873 states and 5672 transitions. Second operand 8 states. [2020-04-18 06:49:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:12,946 INFO L93 Difference]: Finished difference Result 1513 states and 4418 transitions. [2020-04-18 06:49:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:49:12,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-04-18 06:49:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:12,950 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 06:49:12,950 INFO L226 Difference]: Without dead ends: 949 [2020-04-18 06:49:12,951 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:49:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-04-18 06:49:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 917. [2020-04-18 06:49:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-04-18 06:49:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2581 transitions. [2020-04-18 06:49:12,974 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2581 transitions. Word has length 44 [2020-04-18 06:49:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:12,974 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 2581 transitions. [2020-04-18 06:49:12,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:49:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2581 transitions. [2020-04-18 06:49:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:49:12,977 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:49:12,977 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, 1, 1] [2020-04-18 06:49:12,978 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:49:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:49:12,978 INFO L82 PathProgramCache]: Analyzing trace with hash -382500482, now seen corresponding path program 1 times [2020-04-18 06:49:12,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:49:12,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663274081] [2020-04-18 06:49:12,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:49:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:49:13,076 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 06:49:13,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663274081] [2020-04-18 06:49:13,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:49:13,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:49:13,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927596590] [2020-04-18 06:49:13,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:49:13,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:49:13,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:49:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:49:13,079 INFO L87 Difference]: Start difference. First operand 917 states and 2581 transitions. Second operand 7 states. [2020-04-18 06:49:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:49:13,163 INFO L93 Difference]: Finished difference Result 863 states and 2419 transitions. [2020-04-18 06:49:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:49:13,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-04-18 06:49:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:49:13,163 INFO L225 Difference]: With dead ends: 863 [2020-04-18 06:49:13,164 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:49:13,164 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:49:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:49:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:49:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:49:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:49:13,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 06:49:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:49:13,166 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:49:13,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:49:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:49:13,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:49:13,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:49:13 BasicIcfg [2020-04-18 06:49:13,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:49:13,176 INFO L168 Benchmark]: Toolchain (without parser) took 8078.40 ms. Allocated memory was 142.1 MB in the beginning and 416.3 MB in the end (delta: 274.2 MB). Free memory was 98.8 MB in the beginning and 167.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 205.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,176 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 06:49:13,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.14 ms. Allocated memory was 142.1 MB in the beginning and 199.8 MB in the end (delta: 57.7 MB). Free memory was 97.0 MB in the beginning and 154.0 MB in the end (delta: -57.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 199.8 MB. Free memory was 154.0 MB in the beginning and 151.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,183 INFO L168 Benchmark]: Boogie Preprocessor took 26.55 ms. Allocated memory is still 199.8 MB. Free memory was 151.8 MB in the beginning and 150.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,183 INFO L168 Benchmark]: RCFGBuilder took 454.38 ms. Allocated memory is still 199.8 MB. Free memory was 150.8 MB in the beginning and 128.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,184 INFO L168 Benchmark]: TraceAbstraction took 6812.18 ms. Allocated memory was 199.8 MB in the beginning and 416.3 MB in the end (delta: 216.5 MB). Free memory was 127.4 MB in the beginning and 167.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:49:13,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.14 ms. Allocated memory was 142.1 MB in the beginning and 199.8 MB in the end (delta: 57.7 MB). Free memory was 97.0 MB in the beginning and 154.0 MB in the end (delta: -57.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 199.8 MB. Free memory was 154.0 MB in the beginning and 151.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.55 ms. Allocated memory is still 199.8 MB. Free memory was 151.8 MB in the beginning and 150.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.38 ms. Allocated memory is still 199.8 MB. Free memory was 150.8 MB in the beginning and 128.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6812.18 ms. Allocated memory was 199.8 MB in the beginning and 416.3 MB in the end (delta: 216.5 MB). Free memory was 127.4 MB in the beginning and 167.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 176.0 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: 6.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 897 SDtfs, 1544 SDslu, 2895 SDs, 0 SdLazy, 360 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.8s 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: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 4068 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 52418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...