/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:50:26,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:50:26,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:50:26,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:50:26,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:50:26,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:50:26,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:50:26,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:50:26,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:50:26,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:50:26,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:50:26,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:50:26,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:50:26,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:50:26,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:50:26,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:50:26,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:50:26,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:50:26,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:50:26,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:50:26,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:50:26,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:50:26,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:50:26,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:50:26,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:50:26,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:50:26,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:50:26,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:50:26,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:50:26,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:50:26,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:50:26,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:50:26,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:50:26,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:50:26,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:50:26,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:50:26,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:50:26,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:50:26,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:50:26,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:50:26,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:50:26,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:50:26,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:50:26,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:50:26,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:50:26,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:50:26,913 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:50:26,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:50:26,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:50:26,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:50:26,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:50:26,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:50:26,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:50:26,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:50:26,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:50:26,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:50:26,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:50:26,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:50:26,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:50:26,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:50:26,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:50:26,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:50:26,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:50:26,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:50:26,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:50:26,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:50:26,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:50:27,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:50:27,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:50:27,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:50:27,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:50:27,235 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:50:27,235 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-04-17 17:50:27,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0698baa/e251dfa9e1a44a79879cf8e484ffa044/FLAG8bbe5a8b2 [2020-04-17 17:50:27,843 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:50:27,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-04-17 17:50:27,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0698baa/e251dfa9e1a44a79879cf8e484ffa044/FLAG8bbe5a8b2 [2020-04-17 17:50:28,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0698baa/e251dfa9e1a44a79879cf8e484ffa044 [2020-04-17 17:50:28,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:50:28,203 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:50:28,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:50:28,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:50:28,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:50:28,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28, skipping insertion in model container [2020-04-17 17:50:28,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:50:28,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:50:28,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:50:28,776 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:50:28,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:50:28,919 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:50:28,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28 WrapperNode [2020-04-17 17:50:28,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:50:28,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:50:28,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:50:28,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:50:28,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:50:28,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:50:28,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:50:28,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:50:28,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:28,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:29,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:29,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (1/1) ... [2020-04-17 17:50:29,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:50:29,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:50:29,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:50:29,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:50:29,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (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 [2020-04-17 17:50:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:50:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:50:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:50:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:50:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:50:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:50:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:50:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:50:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:50:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:50:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:50:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:50:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:50:29,072 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:50:29,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:50:29,450 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:50:29,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:50:29 BoogieIcfgContainer [2020-04-17 17:50:29,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:50:29,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:50:29,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:50:29,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:50:29,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:50:28" (1/3) ... [2020-04-17 17:50:29,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:50:29, skipping insertion in model container [2020-04-17 17:50:29,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:50:28" (2/3) ... [2020-04-17 17:50:29,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:50:29, skipping insertion in model container [2020-04-17 17:50:29,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:50:29" (3/3) ... [2020-04-17 17:50:29,463 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-04-17 17:50:29,473 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:50:29,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:50:29,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:50:29,483 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:50:29,516 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,517 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,517 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,517 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,518 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,518 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,519 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,520 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,520 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,520 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,521 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,521 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,522 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,522 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,522 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,523 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,530 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,531 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,531 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,531 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,548 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,549 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,550 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,550 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,561 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,561 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,562 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,562 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:50:29,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:50:29,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:50:29,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:50:29,599 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:50:29,599 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:50:29,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:50:29,599 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:50:29,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:50:29,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:50:29,622 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 17:50:29,624 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:50:29,689 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:50:29,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:50:29,696 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:50:29,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:50:29,725 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:50:29,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:50:29,726 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:50:29,728 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:50:29,729 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:50:31,388 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 17:50:31,608 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 17:50:31,675 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 17:50:31,676 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 17:50:31,685 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 17:50:31,721 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 17:50:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 17:50:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:50:31,734 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:31,735 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:31,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 17:50:31,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:31,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125303487] [2020-04-17 17:50:31,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125303487] [2020-04-17 17:50:32,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:50:32,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967772965] [2020-04-17 17:50:32,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:50:32,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:50:32,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:50:32,062 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 17:50:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,116 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 17:50:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:50:32,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:50:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,135 INFO L225 Difference]: With dead ends: 282 [2020-04-17 17:50:32,135 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 17:50:32,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:50:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 17:50:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 17:50:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 17:50:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 17:50:32,207 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 17:50:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,208 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 17:50:32,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:50:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 17:50:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:50:32,210 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,210 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,211 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-17 17:50:32,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686145245] [2020-04-17 17:50:32,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686145245] [2020-04-17 17:50:32,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:50:32,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222463446] [2020-04-17 17:50:32,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:50:32,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:50:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:50:32,321 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 17:50:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,356 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 17:50:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:50:32,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:50:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,358 INFO L225 Difference]: With dead ends: 242 [2020-04-17 17:50:32,358 INFO L226 Difference]: Without dead ends: 116 [2020-04-17 17:50:32,359 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-04-17 17:50:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-04-17 17:50:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-17 17:50:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-04-17 17:50:32,387 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-04-17 17:50:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,388 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-04-17 17:50:32,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:50:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-04-17 17:50:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:50:32,389 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,389 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-17 17:50:32,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771486701] [2020-04-17 17:50:32,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771486701] [2020-04-17 17:50:32,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:50:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427842919] [2020-04-17 17:50:32,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:50:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:50:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:50:32,439 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-04-17 17:50:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,462 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-04-17 17:50:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:50:32,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:50:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,464 INFO L225 Difference]: With dead ends: 164 [2020-04-17 17:50:32,464 INFO L226 Difference]: Without dead ends: 92 [2020-04-17 17:50:32,465 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-17 17:50:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-17 17:50:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-17 17:50:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-04-17 17:50:32,474 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-04-17 17:50:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,474 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-04-17 17:50:32,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:50:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-04-17 17:50:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:50:32,475 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,476 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,476 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-04-17 17:50:32,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071915749] [2020-04-17 17:50:32,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071915749] [2020-04-17 17:50:32,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:50:32,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714786133] [2020-04-17 17:50:32,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:50:32,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:50:32,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:50:32,562 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-04-17 17:50:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,588 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-04-17 17:50:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:50:32,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:50:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,590 INFO L225 Difference]: With dead ends: 122 [2020-04-17 17:50:32,591 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 17:50:32,591 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 17:50:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 17:50:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 17:50:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 17:50:32,597 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-04-17 17:50:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,597 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 17:50:32,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:50:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 17:50:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:50:32,598 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,599 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,599 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-17 17:50:32,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965135345] [2020-04-17 17:50:32,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965135345] [2020-04-17 17:50:32,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:50:32,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872566128] [2020-04-17 17:50:32,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:50:32,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:50:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:50:32,697 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 17:50:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,733 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 17:50:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:50:32,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:50:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,735 INFO L225 Difference]: With dead ends: 81 [2020-04-17 17:50:32,735 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 17:50:32,736 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 17:50:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 17:50:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 17:50:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 17:50:32,746 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 17:50:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,754 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 17:50:32,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:50:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 17:50:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:50:32,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,758 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-17 17:50:32,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544970403] [2020-04-17 17:50:32,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:32,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544970403] [2020-04-17 17:50:32,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:32,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:50:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807442395] [2020-04-17 17:50:32,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:50:32,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:32,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:50:32,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:32,883 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 17:50:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:32,952 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 17:50:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:50:32,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 17:50:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:32,954 INFO L225 Difference]: With dead ends: 60 [2020-04-17 17:50:32,954 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 17:50:32,955 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:50:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 17:50:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 17:50:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 17:50:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 17:50:32,959 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 17:50:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:32,959 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 17:50:32,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:50:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 17:50:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:50:32,960 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:32,961 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:32,961 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-17 17:50:32,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:32,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011257568] [2020-04-17 17:50:32,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:33,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011257568] [2020-04-17 17:50:33,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:33,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:50:33,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417286452] [2020-04-17 17:50:33,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:50:33,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:50:33,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:50:33,049 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 17:50:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:33,126 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 17:50:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:50:33,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 17:50:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:33,127 INFO L225 Difference]: With dead ends: 42 [2020-04-17 17:50:33,128 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 17:50:33,128 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:50:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 17:50:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 17:50:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 17:50:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 17:50:33,133 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 17:50:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:33,133 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 17:50:33,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:50:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 17:50:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 17:50:33,135 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:50:33,135 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:50:33,135 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:50:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:50:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-17 17:50:33,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:50:33,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276767624] [2020-04-17 17:50:33,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:50:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:50:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:50:33,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276767624] [2020-04-17 17:50:33,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:50:33,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:50:33,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413817584] [2020-04-17 17:50:33,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:50:33,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:50:33,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:50:33,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:50:33,212 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 17:50:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:50:33,234 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 17:50:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:50:33,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 17:50:33,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:50:33,234 INFO L225 Difference]: With dead ends: 35 [2020-04-17 17:50:33,235 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:50:33,235 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:50:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:50:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:50:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:50:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:50:33,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 17:50:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:50:33,236 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:50:33,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:50:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:50:33,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:50:33,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:50:33 BasicIcfg [2020-04-17 17:50:33,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:50:33,249 INFO L168 Benchmark]: Toolchain (without parser) took 5059.91 ms. Allocated memory was 145.2 MB in the beginning and 248.5 MB in the end (delta: 103.3 MB). Free memory was 101.8 MB in the beginning and 165.1 MB in the end (delta: -63.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,251 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.15 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 158.8 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.30 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,256 INFO L168 Benchmark]: Boogie Preprocessor took 28.59 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,258 INFO L168 Benchmark]: RCFGBuilder took 448.16 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 132.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,262 INFO L168 Benchmark]: TraceAbstraction took 3786.88 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.5 MB in the beginning and 165.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:50:33,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 716.15 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 158.8 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.30 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.59 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.16 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 132.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3786.88 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.5 MB in the beginning and 165.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 670 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 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...