/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:47:37,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:47:37,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:47:37,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:47:37,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:47:37,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:47:37,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:47:37,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:47:37,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:47:37,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:47:37,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:47:37,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:47:37,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:47:37,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:47:37,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:47:37,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:47:37,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:47:37,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:47:37,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:47:37,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:47:37,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:47:37,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:47:37,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:47:37,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:47:37,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:47:37,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:47:37,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:47:37,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:47:37,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:47:37,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:47:37,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:47:37,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:47:37,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:47:37,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:47:37,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:47:37,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:47:37,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:47:37,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:47:37,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:47:37,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:47:37,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:47:37,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:47:37,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:47:37,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:47:37,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:47:37,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:47:37,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:47:37,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:47:37,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:47:37,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:47:37,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:47:37,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:47:37,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:47:37,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:47:37,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:47:37,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:47:37,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:47:37,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:47:37,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:47:37,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:47:37,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:47:37,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:47:37,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:47:37,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:47:37,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:47:37,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:47:37,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:47:37,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:47:37,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:47:37,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:47:37,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:47:37,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:47:37,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:47:37,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:47:37,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:47:37,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:47:37,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:47:37,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-10-05 22:47:37,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b3d9b87/a0bc9f1fa4404a6588f9e1f9fe966441/FLAGdceb2d8a8 [2020-10-05 22:47:38,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:47:38,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-10-05 22:47:38,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b3d9b87/a0bc9f1fa4404a6588f9e1f9fe966441/FLAGdceb2d8a8 [2020-10-05 22:47:38,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b3d9b87/a0bc9f1fa4404a6588f9e1f9fe966441 [2020-10-05 22:47:38,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:47:38,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:47:38,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:47:38,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:47:38,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:47:38,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:47:38" (1/1) ... [2020-10-05 22:47:38,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16495c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:38, skipping insertion in model container [2020-10-05 22:47:38,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:47:38" (1/1) ... [2020-10-05 22:47:38,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:47:38,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:47:39,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:47:39,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:47:39,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:47:39,343 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:47:39,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39 WrapperNode [2020-10-05 22:47:39,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:47:39,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:47:39,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:47:39,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:47:39,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:47:39,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:47:39,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:47:39,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:47:39,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (1/1) ... [2020-10-05 22:47:39,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:47:39,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:47:39,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:47:39,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:47:39,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (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 [2020-10-05 22:47:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:47:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:47:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:47:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:47:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:47:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:47:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:47:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:47:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:47:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:47:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:47:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:47:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:47:39,502 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:47:39,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:47:39,906 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:47:39,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:47:39 BoogieIcfgContainer [2020-10-05 22:47:39,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:47:39,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:47:39,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:47:39,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:47:39,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:47:38" (1/3) ... [2020-10-05 22:47:39,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9a738e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:47:39, skipping insertion in model container [2020-10-05 22:47:39,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:39" (2/3) ... [2020-10-05 22:47:39,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9a738e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:47:39, skipping insertion in model container [2020-10-05 22:47:39,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:47:39" (3/3) ... [2020-10-05 22:47:39,922 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-10-05 22:47:39,933 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:47:39,934 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:47:39,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:47:39,947 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:47:39,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,981 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,981 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,993 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,994 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,994 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,994 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,996 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,997 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:39,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:40,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:47:40,037 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:47:40,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:47:40,038 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:47:40,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:47:40,038 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:47:40,038 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:47:40,038 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:47:40,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:47:40,054 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-05 22:47:40,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:47:40,102 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:47:40,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:47:40,108 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:47:40,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:47:40,131 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:47:40,132 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:47:40,132 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:47:40,134 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:47:40,136 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:47:41,742 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-10-05 22:47:41,743 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-10-05 22:47:41,746 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:47:41,773 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:47:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:47:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:47:41,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:41,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:41,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:41,791 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-05 22:47:41,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:41,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382259199] [2020-10-05 22:47:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382259199] [2020-10-05 22:47:42,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:47:42,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313523692] [2020-10-05 22:47:42,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:47:42,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:47:42,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:47:42,073 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:47:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,117 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:47:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:47:42,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:47:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,137 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:47:42,137 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:47:42,139 INFO L675 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 [2020-10-05 22:47:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:47:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:47:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:47:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:47:42,213 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:47:42,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,215 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:47:42,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:47:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:47:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:47:42,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:47:42,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-05 22:47:42,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729941027] [2020-10-05 22:47:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729941027] [2020-10-05 22:47:42,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:42,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619251887] [2020-10-05 22:47:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:42,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:42,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:42,349 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-05 22:47:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,383 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-05 22:47:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:47:42,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 22:47:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,386 INFO L225 Difference]: With dead ends: 242 [2020-10-05 22:47:42,386 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 22:47:42,387 INFO L675 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 [2020-10-05 22:47:42,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 22:47:42,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-05 22:47:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:47:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-05 22:47:42,408 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-05 22:47:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,409 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-05 22:47:42,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-05 22:47:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:47:42,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:47:42,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-05 22:47:42,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506565415] [2020-10-05 22:47:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506565415] [2020-10-05 22:47:42,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:42,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586821040] [2020-10-05 22:47:42,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:47:42,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:47:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:47:42,458 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-05 22:47:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,469 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-10-05 22:47:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:47:42,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-05 22:47:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,472 INFO L225 Difference]: With dead ends: 138 [2020-10-05 22:47:42,472 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:47:42,472 INFO L675 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 [2020-10-05 22:47:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:47:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-05 22:47:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:47:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-10-05 22:47:42,484 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-10-05 22:47:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,484 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-10-05 22:47:42,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:47:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-10-05 22:47:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:47:42,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:47:42,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-10-05 22:47:42,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441297069] [2020-10-05 22:47:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441297069] [2020-10-05 22:47:42,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:47:42,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070883316] [2020-10-05 22:47:42,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:47:42,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:47:42,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:47:42,558 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-10-05 22:47:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,564 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-10-05 22:47:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:47:42,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 22:47:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,566 INFO L225 Difference]: With dead ends: 134 [2020-10-05 22:47:42,567 INFO L226 Difference]: Without dead ends: 134 [2020-10-05 22:47:42,567 INFO L675 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 [2020-10-05 22:47:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-05 22:47:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-05 22:47:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 22:47:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-10-05 22:47:42,577 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-10-05 22:47:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,577 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-10-05 22:47:42,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:47:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-10-05 22:47:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:47:42,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:47:42,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 1 times [2020-10-05 22:47:42,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106752791] [2020-10-05 22:47:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106752791] [2020-10-05 22:47:42,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:42,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4150890] [2020-10-05 22:47:42,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:42,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:42,624 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-10-05 22:47:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,645 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-10-05 22:47:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:47:42,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:47:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,647 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:47:42,647 INFO L226 Difference]: Without dead ends: 104 [2020-10-05 22:47:42,648 INFO L675 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 [2020-10-05 22:47:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-05 22:47:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-05 22:47:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 22:47:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-10-05 22:47:42,655 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-10-05 22:47:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,655 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-10-05 22:47:42,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:42,656 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-10-05 22:47:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:47:42,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:47:42,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash -589742481, now seen corresponding path program 2 times [2020-10-05 22:47:42,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834744348] [2020-10-05 22:47:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834744348] [2020-10-05 22:47:42,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:47:42,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576943717] [2020-10-05 22:47:42,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:42,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:42,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:42,712 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-10-05 22:47:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,736 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-10-05 22:47:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:47:42,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:47:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,737 INFO L225 Difference]: With dead ends: 128 [2020-10-05 22:47:42,738 INFO L226 Difference]: Without dead ends: 68 [2020-10-05 22:47:42,738 INFO L675 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 [2020-10-05 22:47:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-05 22:47:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-05 22:47:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 22:47:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-05 22:47:42,747 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-05 22:47:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,747 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-05 22:47:42,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-05 22:47:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:47:42,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:47:42,749 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,749 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 3 times [2020-10-05 22:47:42,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470150488] [2020-10-05 22:47:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470150488] [2020-10-05 22:47:42,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:42,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094609438] [2020-10-05 22:47:42,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:42,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:42,820 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-05 22:47:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,850 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-05 22:47:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:47:42,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:47:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,851 INFO L225 Difference]: With dead ends: 81 [2020-10-05 22:47:42,851 INFO L226 Difference]: Without dead ends: 59 [2020-10-05 22:47:42,852 INFO L675 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 [2020-10-05 22:47:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-05 22:47:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-05 22:47:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-05 22:47:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-05 22:47:42,855 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-05 22:47:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:42,855 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-05 22:47:42,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-05 22:47:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:47:42,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:42,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:42,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:47:42,857 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:42,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-05 22:47:42,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:42,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355664197] [2020-10-05 22:47:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:42,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355664197] [2020-10-05 22:47:42,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:42,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:47:42,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307939709] [2020-10-05 22:47:42,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:47:42,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:42,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:47:42,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:47:42,940 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-05 22:47:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:42,993 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-05 22:47:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:47:42,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-05 22:47:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:42,994 INFO L225 Difference]: With dead ends: 60 [2020-10-05 22:47:42,995 INFO L226 Difference]: Without dead ends: 45 [2020-10-05 22:47:42,995 INFO L675 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 [2020-10-05 22:47:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-05 22:47:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-05 22:47:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-05 22:47:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-05 22:47:43,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-05 22:47:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:43,003 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-05 22:47:43,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:47:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-05 22:47:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:47:43,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:43,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:43,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:47:43,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-05 22:47:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362993642] [2020-10-05 22:47:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:43,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362993642] [2020-10-05 22:47:43,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:43,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:47:43,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825275530] [2020-10-05 22:47:43,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:47:43,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:47:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:47:43,095 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-05 22:47:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:43,142 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-05 22:47:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:47:43,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:47:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:43,143 INFO L225 Difference]: With dead ends: 42 [2020-10-05 22:47:43,143 INFO L226 Difference]: Without dead ends: 36 [2020-10-05 22:47:43,144 INFO L675 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 [2020-10-05 22:47:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-05 22:47:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-05 22:47:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-05 22:47:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-05 22:47:43,146 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-05 22:47:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:43,147 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-05 22:47:43,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:47:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-05 22:47:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:47:43,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:43,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:43,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:47:43,148 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-05 22:47:43,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:43,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455848212] [2020-10-05 22:47:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:43,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455848212] [2020-10-05 22:47:43,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:43,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:43,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196348400] [2020-10-05 22:47:43,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:47:43,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:47:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:47:43,178 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-05 22:47:43,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:43,182 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-05 22:47:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:47:43,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 22:47:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:43,183 INFO L225 Difference]: With dead ends: 35 [2020-10-05 22:47:43,183 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:47:43,183 INFO L675 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 [2020-10-05 22:47:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:47:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:47:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:47:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:47:43,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:47:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:43,185 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:47:43,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:47:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:47:43,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:47:43,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:47:43,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:47:43 BasicIcfg [2020-10-05 22:47:43,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:47:43,193 INFO L168 Benchmark]: Toolchain (without parser) took 4756.16 ms. Allocated memory was 141.0 MB in the beginning and 244.8 MB in the end (delta: 103.8 MB). Free memory was 103.4 MB in the beginning and 130.3 MB in the end (delta: -26.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,193 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 907.48 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 160.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.40 ms. Allocated memory is still 205.5 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,196 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 205.5 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,197 INFO L168 Benchmark]: RCFGBuilder took 485.19 ms. Allocated memory is still 205.5 MB. Free memory was 156.8 MB in the beginning and 135.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,198 INFO L168 Benchmark]: TraceAbstraction took 3279.12 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 134.5 MB in the beginning and 130.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:43,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 907.48 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 160.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.40 ms. Allocated memory is still 205.5 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 205.5 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.19 ms. Allocated memory is still 205.5 MB. Free memory was 156.8 MB in the beginning and 135.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3279.12 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 134.5 MB in the beginning and 130.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 179 SDtfs, 126 SDslu, 183 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 4013 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...