/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/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:43:38,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:43:39,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:43:39,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:43:39,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:43:39,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:43:39,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:43:39,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:43:39,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:43:39,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:43:39,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:43:39,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:43:39,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:43:39,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:43:39,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:43:39,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:43:39,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:43:39,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:43:39,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:43:39,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:43:39,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:43:39,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:43:39,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:43:39,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:43:39,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:43:39,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:43:39,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:43:39,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:43:39,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:43:39,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:43:39,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:43:39,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:43:39,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:43:39,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:43:39,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:43:39,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:43:39,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:43:39,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:43:39,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:43:39,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:43:39,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:43:39,048 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 17:43:39,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:43:39,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:43:39,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:43:39,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:43:39,066 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:43:39,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:43:39,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:43:39,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:43:39,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:43:39,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:43:39,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:43:39,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:43:39,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:43:39,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:43:39,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:43:39,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:43:39,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:43:39,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:43:39,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:43:39,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:43:39,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:43:39,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:43:39,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:43:39,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:43:39,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:43:39,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:43:39,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:43:39,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:43:39,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:43:39,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:43:39,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:43:39,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:43:39,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:43:39,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:43:39,403 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:43:39,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-17 17:43:39,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35b1a98d/6bcfa9fbd38342ff824162c9551cc450/FLAGd631ce8d5 [2020-04-17 17:43:40,047 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:43:40,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-17 17:43:40,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35b1a98d/6bcfa9fbd38342ff824162c9551cc450/FLAGd631ce8d5 [2020-04-17 17:43:40,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35b1a98d/6bcfa9fbd38342ff824162c9551cc450 [2020-04-17 17:43:40,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:43:40,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:43:40,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:43:40,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:43:40,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:43:40,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:43:40" (1/1) ... [2020-04-17 17:43:40,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f14f92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:40, skipping insertion in model container [2020-04-17 17:43:40,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:43:40" (1/1) ... [2020-04-17 17:43:40,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:43:40,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:43:40,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:43:40,930 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:43:40,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:43:41,056 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:43:41,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41 WrapperNode [2020-04-17 17:43:41,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:43:41,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:43:41,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:43:41,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:43:41,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:43:41,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:43:41,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:43:41,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:43:41,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (1/1) ... [2020-04-17 17:43:41,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:43:41,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:43:41,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:43:41,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:43:41,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (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 17:43:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:43:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:43:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:43:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:43:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:43:41,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:43:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:43:41,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:43:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:43:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:43:41,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:43:41,223 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 17:43:41,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:43:41,596 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:43:41,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:43:41 BoogieIcfgContainer [2020-04-17 17:43:41,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:43:41,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:43:41,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:43:41,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:43:41,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:43:40" (1/3) ... [2020-04-17 17:43:41,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc8aa1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:43:41, skipping insertion in model container [2020-04-17 17:43:41,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:43:41" (2/3) ... [2020-04-17 17:43:41,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc8aa1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:43:41, skipping insertion in model container [2020-04-17 17:43:41,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:43:41" (3/3) ... [2020-04-17 17:43:41,612 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-04-17 17:43:41,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:43:41,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:43:41,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:43:41,633 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:43:41,658 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,658 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,659 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,659 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,660 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,660 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,660 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,661 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,661 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,662 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,662 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,666 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,667 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,667 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,667 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,674 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,675 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,675 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:43:41,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 17:43:41,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:43:41,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:43:41,708 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:43:41,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:43:41,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:43:41,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:43:41,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:43:41,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:43:41,723 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-17 17:43:41,725 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-17 17:43:41,764 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-17 17:43:41,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:43:41,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 17:43:41,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-17 17:43:41,790 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-17 17:43:41,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:43:41,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 17:43:41,793 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 17:43:41,794 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:43:43,359 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-17 17:43:43,359 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-17 17:43:43,368 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 17:43:43,381 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 17:43:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 17:43:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 17:43:43,389 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:43,389 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 17:43:43,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-17 17:43:43,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:43,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603500309] [2020-04-17 17:43:43,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:43,669 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 17:43:43,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603500309] [2020-04-17 17:43:43,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:43,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:43:43,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396228635] [2020-04-17 17:43:43,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:43:43,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:43:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:43:43,698 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-17 17:43:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:43,740 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-17 17:43:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:43:43,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 17:43:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:43,773 INFO L225 Difference]: With dead ends: 72 [2020-04-17 17:43:43,774 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 17:43:43,775 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 17:43:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 17:43:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-17 17:43:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-17 17:43:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-17 17:43:43,840 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-17 17:43:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:43,840 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-17 17:43:43,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:43:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-17 17:43:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 17:43:43,842 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:43,842 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:43:43,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 1 times [2020-04-17 17:43:43,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:43,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431746768] [2020-04-17 17:43:43,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:43,961 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 17:43:43,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431746768] [2020-04-17 17:43:43,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:43,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:43:43,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784017629] [2020-04-17 17:43:43,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:43:43,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:43,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:43:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:43:43,965 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-17 17:43:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:43,973 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-17 17:43:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:43:43,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 17:43:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:43,975 INFO L225 Difference]: With dead ends: 53 [2020-04-17 17:43:43,975 INFO L226 Difference]: Without dead ends: 53 [2020-04-17 17:43:43,976 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 17:43:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-17 17:43:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-17 17:43:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-17 17:43:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-17 17:43:43,987 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-17 17:43:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-17 17:43:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:43:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-17 17:43:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:43:43,989 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:43,989 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:43:43,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-17 17:43:43,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:43,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495935935] [2020-04-17 17:43:43,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:44,067 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 17:43:44,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495935935] [2020-04-17 17:43:44,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:44,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:43:44,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193695772] [2020-04-17 17:43:44,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:43:44,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:43:44,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:43:44,069 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-04-17 17:43:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:44,093 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-17 17:43:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:43:44,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-17 17:43:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:44,095 INFO L225 Difference]: With dead ends: 60 [2020-04-17 17:43:44,095 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 17:43:44,095 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 17:43:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 17:43:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 17:43:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 17:43:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-17 17:43:44,100 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-17 17:43:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:44,101 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-17 17:43:44,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:43:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-17 17:43:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:43:44,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:44,102 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:43:44,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-17 17:43:44,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:44,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150511011] [2020-04-17 17:43:44,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:44,174 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 17:43:44,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150511011] [2020-04-17 17:43:44,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:44,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:43:44,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579607767] [2020-04-17 17:43:44,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:43:44,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:44,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:43:44,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:43:44,177 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-17 17:43:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:44,212 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-17 17:43:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:43:44,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:43:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:44,214 INFO L225 Difference]: With dead ends: 39 [2020-04-17 17:43:44,214 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 17:43:44,215 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 17:43:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 17:43:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 17:43:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 17:43:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-17 17:43:44,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-17 17:43:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:44,219 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-17 17:43:44,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:43:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-17 17:43:44,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:43:44,220 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:44,220 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:43:44,220 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:44,221 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-17 17:43:44,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:44,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156439882] [2020-04-17 17:43:44,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:44,311 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 17:43:44,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156439882] [2020-04-17 17:43:44,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:44,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:43:44,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807197830] [2020-04-17 17:43:44,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:43:44,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:43:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:43:44,314 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-17 17:43:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:44,358 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-17 17:43:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:43:44,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 17:43:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:44,359 INFO L225 Difference]: With dead ends: 27 [2020-04-17 17:43:44,360 INFO L226 Difference]: Without dead ends: 22 [2020-04-17 17:43:44,360 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 17:43:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-17 17:43:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-17 17:43:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-17 17:43:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-17 17:43:44,364 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-17 17:43:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:44,365 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-17 17:43:44,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:43:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-17 17:43:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:43:44,370 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:43:44,370 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:43:44,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:43:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:43:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-17 17:43:44,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:43:44,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832910216] [2020-04-17 17:43:44,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:43:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:43:44,428 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 17:43:44,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832910216] [2020-04-17 17:43:44,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:43:44,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:43:44,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975770897] [2020-04-17 17:43:44,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:43:44,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:43:44,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:43:44,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:43:44,432 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-04-17 17:43:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:43:44,439 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-17 17:43:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:43:44,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 17:43:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:43:44,443 INFO L225 Difference]: With dead ends: 21 [2020-04-17 17:43:44,443 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:43:44,444 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 17:43:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:43:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:43:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:43:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:43:44,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-17 17:43:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:43:44,445 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:43:44,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:43:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:43:44,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:43:44,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:43:44 BasicIcfg [2020-04-17 17:43:44,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:43:44,455 INFO L168 Benchmark]: Toolchain (without parser) took 4125.08 ms. Allocated memory was 136.3 MB in the beginning and 253.2 MB in the end (delta: 116.9 MB). Free memory was 97.9 MB in the beginning and 154.9 MB in the end (delta: -57.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,456 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.86 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 96.1 MB in the beginning and 157.6 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.02 ms. Allocated memory is still 201.3 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,459 INFO L168 Benchmark]: Boogie Preprocessor took 27.80 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,460 INFO L168 Benchmark]: RCFGBuilder took 462.06 ms. Allocated memory is still 201.3 MB. Free memory was 153.4 MB in the beginning and 133.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,462 INFO L168 Benchmark]: TraceAbstraction took 2849.72 ms. Allocated memory was 201.3 MB in the beginning and 253.2 MB in the end (delta: 51.9 MB). Free memory was 133.8 MB in the beginning and 154.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-04-17 17:43:44,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.86 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 96.1 MB in the beginning and 157.6 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.02 ms. Allocated memory is still 201.3 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.80 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.06 ms. Allocated memory is still 201.3 MB. Free memory was 153.4 MB in the beginning and 133.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2849.72 ms. Allocated memory was 201.3 MB in the beginning and 253.2 MB in the end (delta: 51.9 MB). Free memory was 133.8 MB in the beginning and 154.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 372 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...