/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:57:31,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:57:31,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:57:31,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:57:31,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:57:31,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:57:31,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:57:31,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:57:31,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:57:31,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:57:31,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:57:31,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:57:31,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:57:31,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:57:31,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:57:31,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:57:31,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:57:31,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:57:31,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:57:31,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:57:31,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:57:31,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:57:31,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:57:31,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:57:31,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:57:31,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:57:31,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:57:31,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:57:31,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:57:31,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:57:31,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:57:31,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:57:31,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:57:31,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:57:31,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:57:31,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:57:31,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:57:31,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:57:31,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:57:31,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:57:31,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:57:31,933 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-SemanticLbe.epf [2020-04-17 21:57:31,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:57:31,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:57:31,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:57:31,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:57:31,948 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:57:31,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:57:31,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:57:31,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:57:31,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:57:31,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:57:31,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:57:31,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:57:31,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:57:31,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:57:31,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:57:31,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:57:31,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:57:31,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:57:31,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:57:31,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:57:31,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:57:31,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:57:31,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:57:31,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:57:31,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:57:31,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:57:31,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:57:31,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:57:31,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:57:32,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:57:32,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:57:32,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:57:32,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:57:32,254 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:57:32,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-04-17 21:57:32,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee9998db/a47c8fc95842425e8a0b58643607951f/FLAG01d87c71d [2020-04-17 21:57:32,860 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:57:32,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2020-04-17 21:57:32,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee9998db/a47c8fc95842425e8a0b58643607951f/FLAG01d87c71d [2020-04-17 21:57:33,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee9998db/a47c8fc95842425e8a0b58643607951f [2020-04-17 21:57:33,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:57:33,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:57:33,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:33,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:57:33,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:57:33,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:33,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e861b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33, skipping insertion in model container [2020-04-17 21:57:33,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:33,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:57:33,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:57:33,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:33,800 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:57:33,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:57:33,948 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:57:33,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33 WrapperNode [2020-04-17 21:57:33,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:57:33,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:33,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:57:33,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:57:33,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:57:34,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:57:34,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:57:34,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:57:34,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (1/1) ... [2020-04-17 21:57:34,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:57:34,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:57:34,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:57:34,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:57:34,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (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 21:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:57:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:57:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:57:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:57:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:57:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:57:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:57:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:57:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:57:34,121 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:57:34,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:57:34,507 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:57:34,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:34 BoogieIcfgContainer [2020-04-17 21:57:34,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:57:34,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:57:34,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:57:34,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:57:34,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:57:33" (1/3) ... [2020-04-17 21:57:34,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae3e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:34, skipping insertion in model container [2020-04-17 21:57:34,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:57:33" (2/3) ... [2020-04-17 21:57:34,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae3e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:57:34, skipping insertion in model container [2020-04-17 21:57:34,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:57:34" (3/3) ... [2020-04-17 21:57:34,519 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-04-17 21:57:34,530 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:57:34,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:57:34,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:57:34,539 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:57:34,563 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,564 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,564 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,565 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,565 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,565 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,566 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,566 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,567 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,567 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,567 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,568 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,569 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,569 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,569 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,569 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,574 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,574 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,574 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,575 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,581 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,582 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,584 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,585 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,585 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,585 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:57:34,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:57:34,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:57:34,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:57:34,622 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:57:34,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:57:34,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:57:34,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:57:34,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:57:34,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:57:34,639 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,683 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 21:57:34,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:34,688 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 21:57:34,691 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 21:57:34,710 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 21:57:34,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:57:34,711 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 21:57:34,713 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-17 21:57:34,714 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:57:36,165 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 21:57:36,476 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-17 21:57:36,539 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-17 21:57:36,539 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-17 21:57:36,543 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 21:57:36,565 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-17 21:57:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-17 21:57:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:57:36,576 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:36,577 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:36,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:36,584 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-17 21:57:36,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:36,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776789966] [2020-04-17 21:57:36,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:36,849 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 21:57:36,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776789966] [2020-04-17 21:57:36,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:36,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:36,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649293122] [2020-04-17 21:57:36,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:36,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:36,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:36,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:36,873 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-17 21:57:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:36,930 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-17 21:57:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:36,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:57:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:36,965 INFO L225 Difference]: With dead ends: 226 [2020-04-17 21:57:36,965 INFO L226 Difference]: Without dead ends: 178 [2020-04-17 21:57:36,966 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 21:57:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-17 21:57:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-17 21:57:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-17 21:57:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-17 21:57:37,047 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-17 21:57:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,048 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-17 21:57:37,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-17 21:57:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:57:37,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,050 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-17 21:57:37,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089953692] [2020-04-17 21:57:37,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,116 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 21:57:37,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089953692] [2020-04-17 21:57:37,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:37,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453585037] [2020-04-17 21:57:37,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,120 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-17 21:57:37,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,137 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-17 21:57:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:37,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 21:57:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,142 INFO L225 Difference]: With dead ends: 168 [2020-04-17 21:57:37,142 INFO L226 Difference]: Without dead ends: 168 [2020-04-17 21:57:37,143 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 21:57:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-17 21:57:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-17 21:57:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-17 21:57:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-17 21:57:37,159 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-17 21:57:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,159 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-17 21:57:37,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-17 21:57:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:57:37,161 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,161 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-17 21:57:37,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083105277] [2020-04-17 21:57:37,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,242 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 21:57:37,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083105277] [2020-04-17 21:57:37,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853953360] [2020-04-17 21:57:37,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,245 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 4 states. [2020-04-17 21:57:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,271 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-04-17 21:57:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:57:37,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 21:57:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,278 INFO L225 Difference]: With dead ends: 240 [2020-04-17 21:57:37,278 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 21:57:37,278 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 21:57:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 21:57:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 21:57:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 21:57:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-04-17 21:57:37,289 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 10 [2020-04-17 21:57:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,290 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-04-17 21:57:37,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-04-17 21:57:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:57:37,291 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,291 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 2 times [2020-04-17 21:57:37,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147319760] [2020-04-17 21:57:37,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,336 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 21:57:37,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147319760] [2020-04-17 21:57:37,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:57:37,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906609957] [2020-04-17 21:57:37,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,341 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-04-17 21:57:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,348 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-04-17 21:57:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:37,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 21:57:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,350 INFO L225 Difference]: With dead ends: 132 [2020-04-17 21:57:37,350 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 21:57:37,351 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 21:57:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 21:57:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 21:57:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 21:57:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-17 21:57:37,372 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-17 21:57:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,373 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-17 21:57:37,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-17 21:57:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:57:37,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,376 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-17 21:57:37,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-17 21:57:37,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,461 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 21:57:37,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697103242] [2020-04-17 21:57:37,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939085304] [2020-04-17 21:57:37,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,464 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-04-17 21:57:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,485 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-17 21:57:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:57:37,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:57:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,487 INFO L225 Difference]: With dead ends: 144 [2020-04-17 21:57:37,487 INFO L226 Difference]: Without dead ends: 60 [2020-04-17 21:57:37,488 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 21:57:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-17 21:57:37,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-17 21:57:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-17 21:57:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-17 21:57:37,500 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-17 21:57:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,501 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-17 21:57:37,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-17 21:57:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:57:37,502 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,502 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,502 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-17 21:57:37,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250547269] [2020-04-17 21:57:37,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,589 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 21:57:37,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250547269] [2020-04-17 21:57:37,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708983999] [2020-04-17 21:57:37,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:57:37,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:57:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:57:37,592 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 4 states. [2020-04-17 21:57:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,624 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-17 21:57:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:57:37,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:57:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,625 INFO L225 Difference]: With dead ends: 73 [2020-04-17 21:57:37,625 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 21:57:37,626 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 21:57:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 21:57:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 21:57:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 21:57:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-17 21:57:37,629 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-17 21:57:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,629 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-17 21:57:37,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:57:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-17 21:57:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:57:37,630 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,630 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,631 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-17 21:57:37,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746273461] [2020-04-17 21:57:37,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,735 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 21:57:37,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746273461] [2020-04-17 21:57:37,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:57:37,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869302693] [2020-04-17 21:57:37,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:57:37,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:57:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:57:37,738 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 5 states. [2020-04-17 21:57:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,808 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-17 21:57:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:57:37,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:57:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,810 INFO L225 Difference]: With dead ends: 53 [2020-04-17 21:57:37,810 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 21:57:37,810 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 21:57:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 21:57:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 21:57:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 21:57:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-17 21:57:37,813 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-17 21:57:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,813 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-17 21:57:37,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:57:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-17 21:57:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:57:37,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,814 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-17 21:57:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073623604] [2020-04-17 21:57:37,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,904 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 21:57:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073623604] [2020-04-17 21:57:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:57:37,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962082091] [2020-04-17 21:57:37,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:57:37,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:57:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:57:37,906 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 6 states. [2020-04-17 21:57:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:37,957 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-17 21:57:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:57:37,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 21:57:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:37,958 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:57:37,958 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 21:57:37,959 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 21:57:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 21:57:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 21:57:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 21:57:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-17 21:57:37,961 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-17 21:57:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:37,962 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-17 21:57:37,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:57:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-17 21:57:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 21:57:37,963 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:57:37,963 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:57:37,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:57:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:57:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-17 21:57:37,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:57:37,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259147682] [2020-04-17 21:57:37,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:57:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:57:37,995 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 21:57:37,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259147682] [2020-04-17 21:57:37,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:57:37,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:57:37,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895468836] [2020-04-17 21:57:37,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:57:37,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:57:37,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:57:37,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:37,997 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-04-17 21:57:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:57:38,003 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-17 21:57:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:57:38,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-17 21:57:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:57:38,004 INFO L225 Difference]: With dead ends: 28 [2020-04-17 21:57:38,004 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:57:38,004 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:57:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:57:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:57:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:57:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:57:38,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-17 21:57:38,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:57:38,005 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:57:38,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:57:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:57:38,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:57:38,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:57:38 BasicIcfg [2020-04-17 21:57:38,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:57:38,012 INFO L168 Benchmark]: Toolchain (without parser) took 4834.48 ms. Allocated memory was 144.2 MB in the beginning and 250.1 MB in the end (delta: 105.9 MB). Free memory was 99.0 MB in the beginning and 188.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,012 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.21 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 97.1 MB in the beginning and 157.7 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.17 ms. Allocated memory is still 201.9 MB. Free memory was 157.7 MB in the beginning and 155.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,015 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,015 INFO L168 Benchmark]: RCFGBuilder took 455.47 ms. Allocated memory is still 201.9 MB. Free memory was 153.6 MB in the beginning and 131.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 21:57:38,016 INFO L168 Benchmark]: TraceAbstraction took 3497.86 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 131.7 MB in the beginning and 188.2 MB in the end (delta: -56.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:57:38,020 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.21 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 97.1 MB in the beginning and 157.7 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.17 ms. Allocated memory is still 201.9 MB. Free memory was 157.7 MB in the beginning and 155.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.47 ms. Allocated memory is still 201.9 MB. Free memory was 153.6 MB in the beginning and 131.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3497.86 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 131.7 MB in the beginning and 188.2 MB in the end (delta: -56.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 144 SDtfs, 109 SDslu, 138 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3162 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...