/usr/bin/java -Xmx16000000000 -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/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:06:40,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:06:40,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:06:40,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:06:40,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:06:40,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:06:40,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:06:40,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:06:40,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:06:40,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:06:40,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:06:40,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:06:40,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:06:40,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:06:40,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:06:40,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:06:40,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:06:40,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:06:40,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:06:40,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:06:40,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:06:40,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:06:40,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:06:40,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:06:40,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:06:40,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:06:40,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:06:40,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:06:40,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:06:40,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:06:40,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:06:40,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:06:40,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:06:40,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:06:40,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:06:40,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:06:40,168 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 [2020-10-11 15:06:40,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:06:40,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:06:40,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:06:40,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:06:40,212 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:06:40,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:06:40,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:06:40,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:06:40,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:06:40,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:06:40,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:06:40,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:06:40,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:06:40,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:06:40,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:06:40,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:06:40,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:06:40,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:06:40,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:06:40,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:06:40,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:06:40,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:06:40,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:06:40,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:06:40,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:06:40,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:06:40,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:06:40,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:06:40,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:06:40,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:06:40,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:06:40,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:06:40,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:06:40,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:06:40,543 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:06:40,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-11 15:06:40,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81c580e4/d629d39f6c9d4eac889eb05b926d158d/FLAG194d27519 [2020-10-11 15:06:41,106 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:06:41,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-11 15:06:41,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81c580e4/d629d39f6c9d4eac889eb05b926d158d/FLAG194d27519 [2020-10-11 15:06:41,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81c580e4/d629d39f6c9d4eac889eb05b926d158d [2020-10-11 15:06:41,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:06:41,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:06:41,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:06:41,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:06:41,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:06:41,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:06:41" (1/1) ... [2020-10-11 15:06:41,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485c5fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:41, skipping insertion in model container [2020-10-11 15:06:41,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:06:41" (1/1) ... [2020-10-11 15:06:41,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:06:41,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:06:42,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:06:42,122 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:06:42,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:06:42,273 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:06:42,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42 WrapperNode [2020-10-11 15:06:42,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:06:42,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:06:42,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:06:42,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:06:42,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:06:42,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:06:42,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:06:42,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:06:42,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (1/1) ... [2020-10-11 15:06:42,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:06:42,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:06:42,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:06:42,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:06:42,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (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 [2020-10-11 15:06:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:06:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:06:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:06:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:06:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:06:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:06:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:06:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:06:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:06:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:06:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-11 15:06:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-11 15:06:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:06:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:06:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:06:42,443 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:06:42,860 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:06:42,861 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:06:42,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:06:42 BoogieIcfgContainer [2020-10-11 15:06:42,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:06:42,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:06:42,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:06:42,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:06:42,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:06:41" (1/3) ... [2020-10-11 15:06:42,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab9013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:06:42, skipping insertion in model container [2020-10-11 15:06:42,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:06:42" (2/3) ... [2020-10-11 15:06:42,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab9013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:06:42, skipping insertion in model container [2020-10-11 15:06:42,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:06:42" (3/3) ... [2020-10-11 15:06:42,872 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-10-11 15:06:42,884 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:06:42,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:06:42,892 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:06:42,893 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:06:42,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,928 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,928 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,928 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,928 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,929 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,929 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,933 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,933 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,933 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,934 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,943 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:06:42,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 15:06:42,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:06:42,985 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:06:42,985 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:06:42,985 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:06:42,985 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:06:42,986 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:06:42,986 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:06:42,986 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:06:43,000 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:06:43,003 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-11 15:06:43,006 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-11 15:06:43,008 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-11 15:06:43,060 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-11 15:06:43,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:06:43,066 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-11 15:06:43,070 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-11 15:06:44,723 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-11 15:06:44,987 INFO L132 LiptonReduction]: Checked pairs total: 3343 [2020-10-11 15:06:44,988 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-11 15:06:44,997 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-10-11 15:06:45,049 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-11 15:06:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-11 15:06:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:06:45,061 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:45,062 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:45,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:45,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-10-11 15:06:45,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:45,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186957519] [2020-10-11 15:06:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:45,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186957519] [2020-10-11 15:06:45,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:45,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:06:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609077071] [2020-10-11 15:06:45,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:06:45,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:06:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:06:45,330 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-11 15:06:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:45,383 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-10-11 15:06:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:06:45,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-11 15:06:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:45,411 INFO L225 Difference]: With dead ends: 670 [2020-10-11 15:06:45,411 INFO L226 Difference]: Without dead ends: 526 [2020-10-11 15:06:45,413 INFO L673 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 [2020-10-11 15:06:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-11 15:06:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-10-11 15:06:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-11 15:06:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-10-11 15:06:45,541 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-10-11 15:06:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:45,542 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-10-11 15:06:45,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:06:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-10-11 15:06:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:06:45,545 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:45,547 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:45,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:06:45,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-10-11 15:06:45,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:45,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287852188] [2020-10-11 15:06:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:45,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287852188] [2020-10-11 15:06:45,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:45,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:06:45,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209224472] [2020-10-11 15:06:45,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:06:45,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:45,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:06:45,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:06:45,686 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-10-11 15:06:45,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:45,715 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-10-11 15:06:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:06:45,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:06:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:45,719 INFO L225 Difference]: With dead ends: 682 [2020-10-11 15:06:45,720 INFO L226 Difference]: Without dead ends: 394 [2020-10-11 15:06:45,721 INFO L673 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 [2020-10-11 15:06:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-11 15:06:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-11 15:06:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-11 15:06:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-10-11 15:06:45,740 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-10-11 15:06:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:45,740 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-10-11 15:06:45,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:06:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-10-11 15:06:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:06:45,742 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:45,743 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:45,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:06:45,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-10-11 15:06:45,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:45,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35824302] [2020-10-11 15:06:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:45,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35824302] [2020-10-11 15:06:45,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:45,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:06:45,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694389247] [2020-10-11 15:06:45,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:06:45,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:06:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:06:45,796 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-10-11 15:06:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:45,808 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-10-11 15:06:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:06:45,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-11 15:06:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:45,812 INFO L225 Difference]: With dead ends: 386 [2020-10-11 15:06:45,812 INFO L226 Difference]: Without dead ends: 386 [2020-10-11 15:06:45,813 INFO L673 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 [2020-10-11 15:06:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-11 15:06:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-10-11 15:06:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-11 15:06:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-10-11 15:06:45,827 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-10-11 15:06:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:45,828 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-10-11 15:06:45,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:06:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-10-11 15:06:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:06:45,830 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:45,831 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:45,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:06:45,831 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:45,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-10-11 15:06:45,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:45,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720931668] [2020-10-11 15:06:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:45,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720931668] [2020-10-11 15:06:45,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:45,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:06:45,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789635797] [2020-10-11 15:06:45,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:06:45,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:06:45,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:06:45,900 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-10-11 15:06:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:45,916 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-10-11 15:06:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:06:45,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-11 15:06:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:45,920 INFO L225 Difference]: With dead ends: 466 [2020-10-11 15:06:45,920 INFO L226 Difference]: Without dead ends: 402 [2020-10-11 15:06:45,920 INFO L673 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 [2020-10-11 15:06:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-11 15:06:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-10-11 15:06:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-11 15:06:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-10-11 15:06:45,933 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-10-11 15:06:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:45,934 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-10-11 15:06:45,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:06:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-10-11 15:06:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:06:45,936 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:45,936 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:45,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:06:45,937 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-10-11 15:06:45,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:45,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059719602] [2020-10-11 15:06:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:45,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059719602] [2020-10-11 15:06:45,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:45,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:06:45,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743700064] [2020-10-11 15:06:45,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:06:45,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:45,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:06:45,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:06:45,989 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-10-11 15:06:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:45,997 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-10-11 15:06:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:06:45,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-11 15:06:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,000 INFO L225 Difference]: With dead ends: 358 [2020-10-11 15:06:46,001 INFO L226 Difference]: Without dead ends: 358 [2020-10-11 15:06:46,001 INFO L673 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 [2020-10-11 15:06:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-11 15:06:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-10-11 15:06:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-11 15:06:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-10-11 15:06:46,013 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-10-11 15:06:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,013 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-10-11 15:06:46,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:06:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-10-11 15:06:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:06:46,015 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,015 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:06:46,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-10-11 15:06:46,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595938544] [2020-10-11 15:06:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595938544] [2020-10-11 15:06:46,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:06:46,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38534575] [2020-10-11 15:06:46,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:06:46,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:06:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:06:46,070 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-10-11 15:06:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,098 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-10-11 15:06:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:06:46,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:06:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,101 INFO L225 Difference]: With dead ends: 514 [2020-10-11 15:06:46,101 INFO L226 Difference]: Without dead ends: 274 [2020-10-11 15:06:46,102 INFO L673 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 [2020-10-11 15:06:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-11 15:06:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-11 15:06:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 15:06:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-10-11 15:06:46,110 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-10-11 15:06:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,111 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-10-11 15:06:46,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:06:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-10-11 15:06:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:06:46,112 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,112 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:06:46,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-10-11 15:06:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530200618] [2020-10-11 15:06:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530200618] [2020-10-11 15:06:46,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:06:46,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426400069] [2020-10-11 15:06:46,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:06:46,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:06:46,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:06:46,203 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-10-11 15:06:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,250 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-10-11 15:06:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:06:46,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:06:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,252 INFO L225 Difference]: With dead ends: 345 [2020-10-11 15:06:46,253 INFO L226 Difference]: Without dead ends: 252 [2020-10-11 15:06:46,253 INFO L673 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 [2020-10-11 15:06:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-11 15:06:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-11 15:06:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-11 15:06:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-10-11 15:06:46,260 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-10-11 15:06:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,261 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-10-11 15:06:46,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:06:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-10-11 15:06:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:06:46,262 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,262 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:06:46,262 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-10-11 15:06:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176010891] [2020-10-11 15:06:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176010891] [2020-10-11 15:06:46,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:06:46,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377416167] [2020-10-11 15:06:46,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:06:46,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:06:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:06:46,358 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-10-11 15:06:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,424 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-10-11 15:06:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:06:46,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-11 15:06:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,428 INFO L225 Difference]: With dead ends: 278 [2020-10-11 15:06:46,428 INFO L226 Difference]: Without dead ends: 203 [2020-10-11 15:06:46,429 INFO L673 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 [2020-10-11 15:06:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-11 15:06:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-11 15:06:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-11 15:06:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-10-11 15:06:46,447 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-10-11 15:06:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,447 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-10-11 15:06:46,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:06:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-10-11 15:06:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:06:46,449 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,449 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:06:46,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,450 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-10-11 15:06:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305415038] [2020-10-11 15:06:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305415038] [2020-10-11 15:06:46,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:06:46,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422552925] [2020-10-11 15:06:46,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:06:46,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:06:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:06:46,592 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-10-11 15:06:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,658 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-10-11 15:06:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:06:46,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-11 15:06:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,660 INFO L225 Difference]: With dead ends: 200 [2020-10-11 15:06:46,661 INFO L226 Difference]: Without dead ends: 162 [2020-10-11 15:06:46,661 INFO L673 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 [2020-10-11 15:06:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-11 15:06:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-11 15:06:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 15:06:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-10-11 15:06:46,670 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-10-11 15:06:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,671 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-10-11 15:06:46,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:06:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-10-11 15:06:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 15:06:46,672 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,673 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:06:46,673 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-10-11 15:06:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817669027] [2020-10-11 15:06:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817669027] [2020-10-11 15:06:46,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:06:46,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491047691] [2020-10-11 15:06:46,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:06:46,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:06:46,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:06:46,726 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-10-11 15:06:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,744 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-10-11 15:06:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:06:46,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-11 15:06:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,746 INFO L225 Difference]: With dead ends: 194 [2020-10-11 15:06:46,746 INFO L226 Difference]: Without dead ends: 127 [2020-10-11 15:06:46,747 INFO L673 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 [2020-10-11 15:06:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-11 15:06:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-11 15:06:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-11 15:06:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-10-11 15:06:46,752 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-10-11 15:06:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,754 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-10-11 15:06:46,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:06:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-10-11 15:06:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 15:06:46,755 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,755 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 15:06:46,755 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-10-11 15:06:46,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279753424] [2020-10-11 15:06:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:46,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279753424] [2020-10-11 15:06:46,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:46,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:06:46,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198603979] [2020-10-11 15:06:46,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:06:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:06:46,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:06:46,864 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-10-11 15:06:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:46,930 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-10-11 15:06:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 15:06:46,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-11 15:06:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:46,931 INFO L225 Difference]: With dead ends: 120 [2020-10-11 15:06:46,932 INFO L226 Difference]: Without dead ends: 71 [2020-10-11 15:06:46,932 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:06:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-11 15:06:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-11 15:06:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-11 15:06:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-10-11 15:06:46,935 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-10-11 15:06:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:46,935 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-10-11 15:06:46,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:06:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-10-11 15:06:46,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 15:06:46,937 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:06:46,937 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:06:46,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 15:06:46,938 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:06:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:06:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-10-11 15:06:46,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:06:46,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422919976] [2020-10-11 15:06:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:06:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:06:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:06:47,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422919976] [2020-10-11 15:06:47,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:06:47,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:06:47,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187835110] [2020-10-11 15:06:47,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:06:47,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:06:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:06:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:06:47,020 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-10-11 15:06:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:06:47,032 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-10-11 15:06:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:06:47,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-11 15:06:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:06:47,033 INFO L225 Difference]: With dead ends: 70 [2020-10-11 15:06:47,033 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:06:47,033 INFO L673 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 [2020-10-11 15:06:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:06:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:06:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:06:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:06:47,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-11 15:06:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:06:47,035 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:06:47,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:06:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:06:47,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:06:47,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 15:06:47,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:06:47 BasicIcfg [2020-10-11 15:06:47,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:06:47,046 INFO L168 Benchmark]: Toolchain (without parser) took 5597.27 ms. Allocated memory was 248.0 MB in the beginning and 424.1 MB in the end (delta: 176.2 MB). Free memory was 203.1 MB in the beginning and 325.2 MB in the end (delta: -122.0 MB). Peak memory consumption was 54.1 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,047 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 248.0 MB. Free memory was 226.0 MB in the beginning and 225.2 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.79 ms. Allocated memory was 248.0 MB in the beginning and 305.7 MB in the end (delta: 57.7 MB). Free memory was 203.1 MB in the beginning and 259.1 MB in the end (delta: -56.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.41 ms. Allocated memory is still 305.7 MB. Free memory was 259.1 MB in the beginning and 256.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,051 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 305.7 MB. Free memory was 256.6 MB in the beginning and 254.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,056 INFO L168 Benchmark]: RCFGBuilder took 513.34 ms. Allocated memory is still 305.7 MB. Free memory was 254.9 MB in the beginning and 230.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,057 INFO L168 Benchmark]: TraceAbstraction took 4174.89 ms. Allocated memory was 305.7 MB in the beginning and 424.1 MB in the end (delta: 118.5 MB). Free memory was 230.5 MB in the beginning and 325.2 MB in the end (delta: -94.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:06:47,063 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 248.0 MB. Free memory was 226.0 MB in the beginning and 225.2 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 828.79 ms. Allocated memory was 248.0 MB in the beginning and 305.7 MB in the end (delta: 57.7 MB). Free memory was 203.1 MB in the beginning and 259.1 MB in the end (delta: -56.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.41 ms. Allocated memory is still 305.7 MB. Free memory was 259.1 MB in the beginning and 256.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 305.7 MB. Free memory was 256.6 MB in the beginning and 254.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 513.34 ms. Allocated memory is still 305.7 MB. Free memory was 254.9 MB in the beginning and 230.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4174.89 ms. Allocated memory was 305.7 MB in the beginning and 424.1 MB in the end (delta: 118.5 MB). Free memory was 230.5 MB in the beginning and 325.2 MB in the end (delta: -94.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1203 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 92 PlacesBefore, 38 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 3343 MoverChecksTotal - 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...