/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:47:36,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:47:36,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:47:36,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:47:36,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:47:36,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:47:36,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:47:36,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:47:36,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:47:36,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:47:36,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:47:36,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:47:36,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:47:36,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:47:36,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:47:36,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:47:36,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:47:36,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:47:36,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:47:36,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:47:36,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:47:36,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:47:36,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:47:36,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:47:36,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:47:36,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:47:36,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:47:36,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:47:36,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:47:36,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:47:36,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:47:36,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:47:36,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:47:36,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:47:36,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:47:36,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:47:36,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:47:36,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:47:36,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:47:36,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:47:36,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:47:36,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 21:47:36,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:47:36,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:47:36,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:47:36,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:47:36,284 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:47:36,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:47:36,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:47:36,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:47:36,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:47:36,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:47:36,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:47:36,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:47:36,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:47:36,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:47:36,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:47:36,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:47:36,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:47:36,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:47:36,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:47:36,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:47:36,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:47:36,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:47:36,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:47:36,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:47:36,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:47:36,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:47:36,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:47:36,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:47:36,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:47:36,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:47:36,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:47:36,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:47:36,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:47:36,575 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:47:36,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-17 21:47:36,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8bac24/fd45aae48b6545c8ae9300edac847bcc/FLAG4e1496351 [2020-04-17 21:47:37,212 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:47:37,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-17 21:47:37,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8bac24/fd45aae48b6545c8ae9300edac847bcc/FLAG4e1496351 [2020-04-17 21:47:37,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb8bac24/fd45aae48b6545c8ae9300edac847bcc [2020-04-17 21:47:37,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:47:37,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:47:37,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:47:37,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:47:37,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:47:37,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:47:37" (1/1) ... [2020-04-17 21:47:37,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e31df89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:37, skipping insertion in model container [2020-04-17 21:47:37,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:47:37" (1/1) ... [2020-04-17 21:47:37,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:47:37,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:47:38,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:47:38,135 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:47:38,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:47:38,274 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:47:38,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38 WrapperNode [2020-04-17 21:47:38,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:47:38,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:47:38,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:47:38,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:47:38,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:47:38,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:47:38,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:47:38,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:47:38,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... [2020-04-17 21:47:38,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:47:38,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:47:38,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:47:38,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:47:38,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:47:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:47:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:47:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:47:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:47:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:47:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:47:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:47:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:47:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:47:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:47:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:47:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:47:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:47:38,423 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:47:38,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:47:38,846 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:47:38,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:47:38 BoogieIcfgContainer [2020-04-17 21:47:38,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:47:38,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:47:38,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:47:38,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:47:38,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:47:37" (1/3) ... [2020-04-17 21:47:38,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aad7bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:47:38, skipping insertion in model container [2020-04-17 21:47:38,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:38" (2/3) ... [2020-04-17 21:47:38,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aad7bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:47:38, skipping insertion in model container [2020-04-17 21:47:38,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:47:38" (3/3) ... [2020-04-17 21:47:38,858 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-04-17 21:47:38,868 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:47:38,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:47:38,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:47:38,877 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:47:38,903 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,903 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,903 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,904 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,904 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,905 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,905 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,906 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,906 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,906 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,907 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,907 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,907 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,908 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,908 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,908 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,909 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,913 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,914 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,920 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,920 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,921 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,921 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,923 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,923 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,924 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,924 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:38,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:47:38,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:47:38,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:47:38,961 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:47:38,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:47:38,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:47:38,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:47:38,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:47:38,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:47:38,978 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:38,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:39,024 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:47:39,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:47:39,029 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:47:39,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:39,053 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:47:39,053 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:47:39,054 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:47:39,056 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:47:39,057 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:47:40,918 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 21:47:40,918 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 21:47:40,922 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:47:40,948 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:47:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:47:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:47:40,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:40,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:40,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 21:47:40,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:40,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904430548] [2020-04-17 21:47:40,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:41,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904430548] [2020-04-17 21:47:41,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:41,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:47:41,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033276] [2020-04-17 21:47:41,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:41,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:41,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,345 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:47:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:41,392 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 21:47:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:41,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:47:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:41,411 INFO L225 Difference]: With dead ends: 282 [2020-04-17 21:47:41,412 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:47:41,413 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:47:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 21:47:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 21:47:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 21:47:41,490 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 21:47:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:41,492 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 21:47:41,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:41,492 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 21:47:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:47:41,494 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:41,494 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:41,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-17 21:47:41,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:41,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048767048] [2020-04-17 21:47:41,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:41,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048767048] [2020-04-17 21:47:41,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:41,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:41,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677634475] [2020-04-17 21:47:41,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:41,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:41,577 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 21:47:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:41,618 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 21:47:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:41,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:47:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:41,621 INFO L225 Difference]: With dead ends: 242 [2020-04-17 21:47:41,621 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 21:47:41,622 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:41,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 21:47:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 21:47:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 21:47:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 21:47:41,636 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 21:47:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:41,637 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 21:47:41,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 21:47:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:47:41,638 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:41,638 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:41,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-17 21:47:41,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:41,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63248036] [2020-04-17 21:47:41,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:41,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63248036] [2020-04-17 21:47:41,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:41,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:41,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227915673] [2020-04-17 21:47:41,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:41,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:41,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:41,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,705 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 21:47:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:41,725 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-04-17 21:47:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:41,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 21:47:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:41,728 INFO L225 Difference]: With dead ends: 138 [2020-04-17 21:47:41,728 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 21:47:41,728 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 21:47:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 21:47:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 21:47:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-04-17 21:47:41,738 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-04-17 21:47:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:41,739 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-04-17 21:47:41,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-04-17 21:47:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:47:41,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:41,741 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:41,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-04-17 21:47:41,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:41,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255711870] [2020-04-17 21:47:41,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:41,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255711870] [2020-04-17 21:47:41,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:41,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:47:41,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680379929] [2020-04-17 21:47:41,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:41,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:41,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:41,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,813 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-04-17 21:47:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:41,821 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-04-17 21:47:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:41,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:47:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:41,824 INFO L225 Difference]: With dead ends: 134 [2020-04-17 21:47:41,824 INFO L226 Difference]: Without dead ends: 134 [2020-04-17 21:47:41,824 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-17 21:47:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-17 21:47:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-17 21:47:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-04-17 21:47:41,844 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-04-17 21:47:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:41,845 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-04-17 21:47:41,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-04-17 21:47:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:41,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:41,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:41,850 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1648184308, now seen corresponding path program 1 times [2020-04-17 21:47:41,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:41,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343810587] [2020-04-17 21:47:41,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:41,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343810587] [2020-04-17 21:47:41,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:41,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:41,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61969604] [2020-04-17 21:47:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:41,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:41,926 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-04-17 21:47:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:41,969 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-04-17 21:47:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:41,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:41,972 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:47:41,972 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 21:47:41,973 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 21:47:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 21:47:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 21:47:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-17 21:47:41,980 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-04-17 21:47:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:41,997 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-17 21:47:41,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-17 21:47:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:41,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:41,999 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:42,001 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 2 times [2020-04-17 21:47:42,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:42,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450320465] [2020-04-17 21:47:42,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:42,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450320465] [2020-04-17 21:47:42,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:42,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:42,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913021413] [2020-04-17 21:47:42,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:42,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:42,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:42,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:42,078 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-17 21:47:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:42,119 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-17 21:47:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:47:42,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:42,120 INFO L225 Difference]: With dead ends: 128 [2020-04-17 21:47:42,121 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 21:47:42,121 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 21:47:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 21:47:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 21:47:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 21:47:42,134 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-17 21:47:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:42,135 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 21:47:42,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 21:47:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:42,136 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:42,136 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:42,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 3 times [2020-04-17 21:47:42,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:42,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6225063] [2020-04-17 21:47:42,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:42,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6225063] [2020-04-17 21:47:42,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:42,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:42,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279794652] [2020-04-17 21:47:42,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:42,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:42,228 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 21:47:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:42,266 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 21:47:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:47:42,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:42,269 INFO L225 Difference]: With dead ends: 81 [2020-04-17 21:47:42,269 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 21:47:42,269 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 21:47:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 21:47:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 21:47:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 21:47:42,272 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 21:47:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:42,272 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 21:47:42,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 21:47:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:47:42,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:42,273 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:42,274 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-17 21:47:42,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:42,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632868485] [2020-04-17 21:47:42,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:42,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632868485] [2020-04-17 21:47:42,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:42,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:42,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861029200] [2020-04-17 21:47:42,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:47:42,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:47:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:42,324 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 21:47:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:42,369 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 21:47:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:47:42,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:47:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:42,370 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:47:42,370 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 21:47:42,371 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:47:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 21:47:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 21:47:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 21:47:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 21:47:42,373 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 21:47:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:42,374 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 21:47:42,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:47:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 21:47:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:47:42,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:42,375 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:42,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-17 21:47:42,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:42,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265025375] [2020-04-17 21:47:42,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:42,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265025375] [2020-04-17 21:47:42,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:42,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:47:42,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239149823] [2020-04-17 21:47:42,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:47:42,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:47:42,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:47:42,428 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 21:47:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:42,473 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 21:47:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:47:42,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:47:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:42,474 INFO L225 Difference]: With dead ends: 42 [2020-04-17 21:47:42,474 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 21:47:42,475 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:47:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 21:47:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 21:47:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 21:47:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 21:47:42,477 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 21:47:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:42,477 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 21:47:42,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:47:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 21:47:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:47:42,478 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:42,478 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:42,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-17 21:47:42,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:42,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27810375] [2020-04-17 21:47:42,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:47:42,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27810375] [2020-04-17 21:47:42,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:42,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:42,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601665260] [2020-04-17 21:47:42,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:42,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:42,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:42,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:42,526 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 21:47:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:42,537 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 21:47:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:42,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 21:47:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:42,538 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:47:42,538 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:47:42,539 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:47:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:47:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:47:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:47:42,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:47:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:42,540 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:47:42,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:47:42,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:47:42,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:47:42 BasicIcfg [2020-04-17 21:47:42,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:47:42,548 INFO L168 Benchmark]: Toolchain (without parser) took 5058.48 ms. Allocated memory was 144.7 MB in the beginning and 248.5 MB in the end (delta: 103.8 MB). Free memory was 101.3 MB in the beginning and 151.0 MB in the end (delta: -49.7 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,549 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.60 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 156.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,557 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,558 INFO L168 Benchmark]: RCFGBuilder took 491.30 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 133.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,563 INFO L168 Benchmark]: TraceAbstraction took 3694.06 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.4 MB in the beginning and 151.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:42,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.60 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 201.9 MB. Free memory was 159.0 MB in the beginning and 156.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.30 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 133.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3694.06 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 132.4 MB in the beginning and 151.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 180 SDtfs, 139 SDslu, 191 SDs, 0 SdLazy, 122 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...