/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:12:52,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:12:52,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:12:52,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:12:52,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:12:52,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:12:52,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:12:52,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:12:52,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:12:52,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:12:52,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:12:52,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:12:52,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:12:52,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:12:52,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:12:52,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:12:52,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:12:52,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:12:52,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:12:52,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:12:52,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:12:52,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:12:52,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:12:52,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:12:52,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:12:52,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:12:52,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:12:52,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:12:52,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:12:52,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:12:52,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:12:52,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:12:52,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:12:52,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:12:52,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:12:52,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:12:52,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:12:52,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:12:52,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:12:52,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:12:52,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:12:52,309 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-VariableLbe.epf [2020-04-18 02:12:52,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:12:52,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:12:52,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:12:52,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:12:52,335 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:12:52,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:12:52,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:12:52,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:12:52,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:12:52,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:12:52,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:12:52,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:12:52,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:12:52,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:12:52,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:12:52,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:12:52,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:12:52,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:12:52,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:12:52,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:12:52,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:12:52,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:12:52,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:12:52,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:12:52,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:12:52,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:12:52,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:12:52,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:12:52,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:12:52,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:12:52,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:12:52,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:12:52,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:12:52,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:12:52,640 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:12:52,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-04-18 02:12:52,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6e42ca4/ba324f29e30d4839bc3a59ef1929fc45/FLAG72131fc6f [2020-04-18 02:12:53,198 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:12:53,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-04-18 02:12:53,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6e42ca4/ba324f29e30d4839bc3a59ef1929fc45/FLAG72131fc6f [2020-04-18 02:12:53,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6e42ca4/ba324f29e30d4839bc3a59ef1929fc45 [2020-04-18 02:12:53,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:12:53,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:12:53,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:12:53,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:12:53,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:12:53,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:12:53" (1/1) ... [2020-04-18 02:12:53,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3459bafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:53, skipping insertion in model container [2020-04-18 02:12:53,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:12:53" (1/1) ... [2020-04-18 02:12:53,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:12:53,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:12:54,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:12:54,108 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:12:54,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:12:54,277 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:12:54,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54 WrapperNode [2020-04-18 02:12:54,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:12:54,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:12:54,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:12:54,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:12:54,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:12:54,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:12:54,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:12:54,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:12:54,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... [2020-04-18 02:12:54,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:12:54,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:12:54,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:12:54,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:12:54,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:12:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:12:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:12:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:12:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:12:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:12:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:12:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:12:54,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:12:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:12:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:12:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:12:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:12:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:12:54,450 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:12:54,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:12:54,828 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:12:54,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:12:54 BoogieIcfgContainer [2020-04-18 02:12:54,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:12:54,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:12:54,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:12:54,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:12:54,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:12:53" (1/3) ... [2020-04-18 02:12:54,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466531a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:12:54, skipping insertion in model container [2020-04-18 02:12:54,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:12:54" (2/3) ... [2020-04-18 02:12:54,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466531a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:12:54, skipping insertion in model container [2020-04-18 02:12:54,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:12:54" (3/3) ... [2020-04-18 02:12:54,841 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-04-18 02:12:54,851 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:12:54,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:12:54,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:12:54,861 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:12:54,886 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,886 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,886 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,887 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,888 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,888 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,888 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,889 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,889 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,889 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,890 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,890 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,890 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,891 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,891 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,891 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,892 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,892 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,897 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,897 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,897 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,904 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,905 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,908 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,908 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:12:54,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:12:54,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:12:54,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:12:54,942 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:12:54,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:12:54,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:12:54,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:12:54,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:12:54,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:12:54,959 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:12:54,961 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:12:55,010 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:12:55,010 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:12:55,016 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:12:55,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:12:55,041 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:12:55,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:12:55,042 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:12:55,044 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:12:55,045 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:12:56,348 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:12:56,417 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 02:12:56,417 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 02:12:56,422 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:12:56,450 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:12:56,453 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:12:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:12:56,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:56,462 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:56,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 02:12:56,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:56,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186541210] [2020-04-18 02:12:56,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:56,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186541210] [2020-04-18 02:12:56,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:56,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:12:56,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058271335] [2020-04-18 02:12:56,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:12:56,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:56,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:12:56,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:12:56,682 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:12:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:56,713 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:12:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:12:56,715 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:12:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:56,733 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:12:56,734 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:12:56,735 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:12:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:12:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:12:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:12:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:12:56,817 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:12:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:56,821 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:12:56,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:12:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:12:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:12:56,825 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:56,825 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:56,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 02:12:56,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:56,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422447760] [2020-04-18 02:12:56,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:56,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422447760] [2020-04-18 02:12:56,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:56,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:12:56,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323701548] [2020-04-18 02:12:56,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:12:56,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:56,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:12:56,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:12:56,978 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:12:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,045 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-04-18 02:12:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:12:57,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:12:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,057 INFO L225 Difference]: With dead ends: 346 [2020-04-18 02:12:57,057 INFO L226 Difference]: Without dead ends: 282 [2020-04-18 02:12:57,058 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 [2020-04-18 02:12:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-04-18 02:12:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-04-18 02:12:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-04-18 02:12:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-04-18 02:12:57,102 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-04-18 02:12:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,103 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-04-18 02:12:57,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:12:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-04-18 02:12:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:12:57,104 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,105 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,105 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash -397112394, now seen corresponding path program 1 times [2020-04-18 02:12:57,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832330704] [2020-04-18 02:12:57,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832330704] [2020-04-18 02:12:57,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:12:57,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746609997] [2020-04-18 02:12:57,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:12:57,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:12:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:12:57,216 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-04-18 02:12:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,241 INFO L93 Difference]: Finished difference Result 306 states and 838 transitions. [2020-04-18 02:12:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:12:57,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:12:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,244 INFO L225 Difference]: With dead ends: 306 [2020-04-18 02:12:57,244 INFO L226 Difference]: Without dead ends: 258 [2020-04-18 02:12:57,245 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 [2020-04-18 02:12:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-04-18 02:12:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-04-18 02:12:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-04-18 02:12:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 722 transitions. [2020-04-18 02:12:57,260 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 722 transitions. Word has length 10 [2020-04-18 02:12:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,261 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 722 transitions. [2020-04-18 02:12:57,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:12:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 722 transitions. [2020-04-18 02:12:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:12:57,263 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,263 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,264 INFO L82 PathProgramCache]: Analyzing trace with hash 554610774, now seen corresponding path program 1 times [2020-04-18 02:12:57,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223968260] [2020-04-18 02:12:57,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223968260] [2020-04-18 02:12:57,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:12:57,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436161000] [2020-04-18 02:12:57,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:12:57,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:12:57,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:12:57,336 INFO L87 Difference]: Start difference. First operand 258 states and 722 transitions. Second operand 4 states. [2020-04-18 02:12:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,367 INFO L93 Difference]: Finished difference Result 394 states and 1044 transitions. [2020-04-18 02:12:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:12:57,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:12:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,370 INFO L225 Difference]: With dead ends: 394 [2020-04-18 02:12:57,370 INFO L226 Difference]: Without dead ends: 290 [2020-04-18 02:12:57,370 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:12:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-04-18 02:12:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 242. [2020-04-18 02:12:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 02:12:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 646 transitions. [2020-04-18 02:12:57,382 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 646 transitions. Word has length 11 [2020-04-18 02:12:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,383 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 646 transitions. [2020-04-18 02:12:57,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:12:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 646 transitions. [2020-04-18 02:12:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:12:57,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,385 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,385 INFO L82 PathProgramCache]: Analyzing trace with hash 556209878, now seen corresponding path program 1 times [2020-04-18 02:12:57,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948646130] [2020-04-18 02:12:57,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948646130] [2020-04-18 02:12:57,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:12:57,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76492544] [2020-04-18 02:12:57,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:12:57,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:12:57,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:12:57,440 INFO L87 Difference]: Start difference. First operand 242 states and 646 transitions. Second operand 5 states. [2020-04-18 02:12:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,512 INFO L93 Difference]: Finished difference Result 290 states and 741 transitions. [2020-04-18 02:12:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:12:57,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:12:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,515 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:12:57,520 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 02:12:57,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:12:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 02:12:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 02:12:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 02:12:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-04-18 02:12:57,535 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 11 [2020-04-18 02:12:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,535 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-04-18 02:12:57,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:12:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-04-18 02:12:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:12:57,537 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,537 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,537 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 594574515, now seen corresponding path program 1 times [2020-04-18 02:12:57,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032113903] [2020-04-18 02:12:57,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032113903] [2020-04-18 02:12:57,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:12:57,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129839172] [2020-04-18 02:12:57,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:12:57,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:12:57,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:12:57,635 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 5 states. [2020-04-18 02:12:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,690 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2020-04-18 02:12:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:12:57,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:12:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,691 INFO L225 Difference]: With dead ends: 196 [2020-04-18 02:12:57,691 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 02:12:57,692 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:12:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 02:12:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 02:12:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 02:12:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-04-18 02:12:57,695 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2020-04-18 02:12:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,696 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-04-18 02:12:57,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:12:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-04-18 02:12:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:12:57,697 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,697 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,697 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-04-18 02:12:57,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412680540] [2020-04-18 02:12:57,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412680540] [2020-04-18 02:12:57,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:12:57,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636041389] [2020-04-18 02:12:57,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:12:57,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:12:57,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:12:57,741 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2020-04-18 02:12:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,766 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-04-18 02:12:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:12:57,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:12:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,768 INFO L225 Difference]: With dead ends: 84 [2020-04-18 02:12:57,768 INFO L226 Difference]: Without dead ends: 70 [2020-04-18 02:12:57,768 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:12:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-18 02:12:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-04-18 02:12:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-04-18 02:12:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-04-18 02:12:57,771 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-04-18 02:12:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,771 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-04-18 02:12:57,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:12:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-04-18 02:12:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:12:57,772 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,772 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-04-18 02:12:57,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940591998] [2020-04-18 02:12:57,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940591998] [2020-04-18 02:12:57,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:12:57,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191832259] [2020-04-18 02:12:57,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:12:57,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:12:57,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:12:57,817 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2020-04-18 02:12:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,853 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 02:12:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:12:57,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:12:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,854 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:12:57,854 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 02:12:57,874 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:12:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 02:12:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 02:12:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 02:12:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-04-18 02:12:57,876 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-04-18 02:12:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,877 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-04-18 02:12:57,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:12:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-04-18 02:12:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:12:57,878 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:12:57,878 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:12:57,878 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:12:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:12:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-04-18 02:12:57,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:12:57,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225751097] [2020-04-18 02:12:57,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:12:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:12:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:12:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225751097] [2020-04-18 02:12:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:12:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:12:57,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242529710] [2020-04-18 02:12:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:12:57,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:12:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:12:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:12:57,941 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-04-18 02:12:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:12:57,964 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-04-18 02:12:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:12:57,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-18 02:12:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:12:57,965 INFO L225 Difference]: With dead ends: 46 [2020-04-18 02:12:57,965 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:12:57,966 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:12:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:12:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:12:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:12:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:12:57,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 02:12:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:12:57,967 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:12:57,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:12:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:12:57,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:12:57,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:12:57 BasicIcfg [2020-04-18 02:12:57,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:12:57,975 INFO L168 Benchmark]: Toolchain (without parser) took 4460.21 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 101.2 MB in the beginning and 201.5 MB in the end (delta: -100.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,976 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.92 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 157.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.26 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,984 INFO L168 Benchmark]: Boogie Preprocessor took 42.24 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,985 INFO L168 Benchmark]: RCFGBuilder took 452.76 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 131.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:12:57,986 INFO L168 Benchmark]: TraceAbstraction took 3139.40 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 131.4 MB in the beginning and 201.5 MB in the end (delta: -70.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:12:58,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 746.92 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 157.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.26 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.24 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 154.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.76 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 131.4 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3139.40 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 131.4 MB in the beginning and 201.5 MB in the end (delta: -70.1 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: 1.4s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 637 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 198 SDtfs, 178 SDslu, 274 SDs, 0 SdLazy, 92 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3356 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...