/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:02:00,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:02:00,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:02:00,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:02:00,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:02:00,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:02:00,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:02:00,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:02:00,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:02:00,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:02:00,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:02:00,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:02:00,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:02:00,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:02:00,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:02:00,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:02:00,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:02:00,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:02:00,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:02:00,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:02:00,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:02:00,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:02:00,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:02:00,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:02:00,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:02:00,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:02:00,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:02:00,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:02:00,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:02:00,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:02:00,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:02:00,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:02:00,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:02:00,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:02:00,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:02:00,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:02:00,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:02:00,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:02:00,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:02:00,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:02:00,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:02:00,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:02:00,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:02:00,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:02:00,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:02:00,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:02:00,572 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:02:00,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:02:00,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:02:00,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:02:00,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:02:00,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:02:00,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:02:00,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:02:00,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:02:00,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:02:00,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:02:00,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:02:00,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:02:00,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:02:00,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:02:00,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:02:00,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:02:00,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:02:00,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:02:00,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:02:00,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:02:00,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:02:00,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:02:00,580 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:02:00,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:02:00,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:02:00,580 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:02:01,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:02:01,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:02:01,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:02:01,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:02:01,077 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:02:01,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-09 17:02:01,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3199c28/755fd8f4635942da9c34b67ffc3115e5/FLAG4d85fcb7f [2020-11-09 17:02:02,069 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:02:02,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-09 17:02:02,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3199c28/755fd8f4635942da9c34b67ffc3115e5/FLAG4d85fcb7f [2020-11-09 17:02:02,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3199c28/755fd8f4635942da9c34b67ffc3115e5 [2020-11-09 17:02:02,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:02:02,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:02:02,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:02,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:02:02,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:02:02,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:02" (1/1) ... [2020-11-09 17:02:02,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fd124b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:02, skipping insertion in model container [2020-11-09 17:02:02,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:02" (1/1) ... [2020-11-09 17:02:02,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:02:02,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:02:02,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:02,956 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:02:03,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:03,158 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:02:03,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03 WrapperNode [2020-11-09 17:02:03,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:03,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:03,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:02:03,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:02:03,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:03,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:02:03,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:02:03,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:02:03,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (1/1) ... [2020-11-09 17:02:03,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:02:03,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:02:03,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:02:03,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:02:03,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (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 [2020-11-09 17:02:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:02:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:02:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:02:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:02:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:02:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:02:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:02:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:02:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:02:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:02:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:02:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:02:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:02:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:02:03,425 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:02:04,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:02:04,059 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:02:04,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:04 BoogieIcfgContainer [2020-11-09 17:02:04,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:02:04,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:02:04,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:02:04,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:02:04,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:02:02" (1/3) ... [2020-11-09 17:02:04,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7806b196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:04, skipping insertion in model container [2020-11-09 17:02:04,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:03" (2/3) ... [2020-11-09 17:02:04,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7806b196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:04, skipping insertion in model container [2020-11-09 17:02:04,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:04" (3/3) ... [2020-11-09 17:02:04,072 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-11-09 17:02:04,092 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:02:04,092 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:02:04,097 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:02:04,099 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:02:04,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,148 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,148 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,148 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,149 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,149 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,149 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,151 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,153 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,153 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,153 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,154 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,155 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,155 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,155 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,155 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,156 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,156 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,156 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,156 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,157 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,157 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,157 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,157 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,169 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,175 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,176 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:04,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:02:04,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:02:04,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:02:04,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:02:04,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:02:04,227 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:02:04,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:02:04,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:02:04,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:02:04,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:02:04,245 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:02:04,246 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:04,250 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:04,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:04,311 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:02:04,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:02:04,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:02:04,320 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:02:05,495 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-09 17:02:07,706 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-09 17:02:07,890 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 17:02:08,339 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-11-09 17:02:08,818 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 17:02:08,936 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:02:09,190 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 17:02:09,312 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:02:09,550 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 17:02:09,550 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 17:02:09,556 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:02:09,586 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 17:02:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 17:02:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:02:09,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:09,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:09,600 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:09,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 17:02:09,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:09,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286223687] [2020-11-09 17:02:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:09,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286223687] [2020-11-09 17:02:09,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:09,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:02:09,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188182657] [2020-11-09 17:02:09,938 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:09,944 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:09,962 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:02:09,962 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:09,969 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:09,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:09,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:09,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:10,000 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 17:02:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:10,095 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-09 17:02:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:10,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:02:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:10,113 INFO L225 Difference]: With dead ends: 290 [2020-11-09 17:02:10,113 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 17:02:10,114 INFO L677 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 [2020-11-09 17:02:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 17:02:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 17:02:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 17:02:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-09 17:02:10,197 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-09 17:02:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-09 17:02:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-09 17:02:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:02:10,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:10,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:10,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:02:10,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:10,203 INFO L82 PathProgramCache]: Analyzing trace with hash 320273006, now seen corresponding path program 1 times [2020-11-09 17:02:10,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:10,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383008470] [2020-11-09 17:02:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:10,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383008470] [2020-11-09 17:02:10,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:10,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:02:10,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [205007209] [2020-11-09 17:02:10,338 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:10,339 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:10,343 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-11-09 17:02:10,343 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:10,424 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:10,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:10,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:10,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:10,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:10,428 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-11-09 17:02:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:10,451 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-11-09 17:02:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:10,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:02:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:10,461 INFO L225 Difference]: With dead ends: 212 [2020-11-09 17:02:10,462 INFO L226 Difference]: Without dead ends: 212 [2020-11-09 17:02:10,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-09 17:02:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-11-09 17:02:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-09 17:02:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-11-09 17:02:10,512 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-11-09 17:02:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:10,513 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-11-09 17:02:10,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-11-09 17:02:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:02:10,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:10,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:10,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:02:10,516 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1338497509, now seen corresponding path program 1 times [2020-11-09 17:02:10,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:10,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910456462] [2020-11-09 17:02:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:10,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910456462] [2020-11-09 17:02:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:10,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:10,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2136566747] [2020-11-09 17:02:10,627 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:10,629 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:10,631 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-11-09 17:02:10,632 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:10,708 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:10,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:10,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:10,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:10,713 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-11-09 17:02:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:10,782 INFO L93 Difference]: Finished difference Result 398 states and 1041 transitions. [2020-11-09 17:02:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:02:10,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:02:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:10,790 INFO L225 Difference]: With dead ends: 398 [2020-11-09 17:02:10,790 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 17:02:10,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 17:02:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 212. [2020-11-09 17:02:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-09 17:02:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 558 transitions. [2020-11-09 17:02:10,833 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 558 transitions. Word has length 10 [2020-11-09 17:02:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:10,834 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 558 transitions. [2020-11-09 17:02:10,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 558 transitions. [2020-11-09 17:02:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:02:10,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:10,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:10,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:02:10,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:10,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1311224329, now seen corresponding path program 2 times [2020-11-09 17:02:10,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:10,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237466890] [2020-11-09 17:02:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:10,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237466890] [2020-11-09 17:02:10,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:10,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:10,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1607060139] [2020-11-09 17:02:10,899 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:10,900 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:10,902 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-11-09 17:02:10,902 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:10,910 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:10,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:10,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:10,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:10,914 INFO L87 Difference]: Start difference. First operand 212 states and 558 transitions. Second operand 4 states. [2020-11-09 17:02:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:10,949 INFO L93 Difference]: Finished difference Result 242 states and 614 transitions. [2020-11-09 17:02:10,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:02:10,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:02:10,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:10,952 INFO L225 Difference]: With dead ends: 242 [2020-11-09 17:02:10,952 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 17:02:10,952 INFO L677 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 [2020-11-09 17:02:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 17:02:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 17:02:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 17:02:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-11-09 17:02:10,960 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-11-09 17:02:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:10,960 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-11-09 17:02:10,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-11-09 17:02:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:02:10,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:10,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:10,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:02:10,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-09 17:02:10,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:10,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146708113] [2020-11-09 17:02:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:11,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146708113] [2020-11-09 17:02:11,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:11,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:11,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [61230854] [2020-11-09 17:02:11,013 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:11,014 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:11,017 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 17:02:11,018 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:11,032 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:11,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:11,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:11,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:11,034 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-11-09 17:02:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:11,061 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-11-09 17:02:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:11,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 17:02:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:11,064 INFO L225 Difference]: With dead ends: 176 [2020-11-09 17:02:11,064 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 17:02:11,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 17:02:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 17:02:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 17:02:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-11-09 17:02:11,071 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-11-09 17:02:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:11,071 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-11-09 17:02:11,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-11-09 17:02:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:02:11,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:11,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:02:11,077 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash -337754424, now seen corresponding path program 1 times [2020-11-09 17:02:11,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:11,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862936591] [2020-11-09 17:02:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:11,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862936591] [2020-11-09 17:02:11,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:11,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:02:11,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [836110981] [2020-11-09 17:02:11,173 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:11,176 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:11,180 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-11-09 17:02:11,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:11,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:11,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:11,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:11,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:11,226 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-11-09 17:02:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:11,233 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-11-09 17:02:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:11,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 17:02:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:11,235 INFO L225 Difference]: With dead ends: 80 [2020-11-09 17:02:11,235 INFO L226 Difference]: Without dead ends: 80 [2020-11-09 17:02:11,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-09 17:02:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-09 17:02:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-09 17:02:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-11-09 17:02:11,239 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-11-09 17:02:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:11,240 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-11-09 17:02:11,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-11-09 17:02:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:02:11,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:11,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:11,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:02:11,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:11,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1881630110, now seen corresponding path program 1 times [2020-11-09 17:02:11,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:11,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791868804] [2020-11-09 17:02:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:11,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791868804] [2020-11-09 17:02:11,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:11,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:11,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [359987359] [2020-11-09 17:02:11,387 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:11,389 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:11,397 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-11-09 17:02:11,401 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:11,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:11,464 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:11,482 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:11,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:11,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:11,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:11,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:11,485 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-11-09 17:02:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:11,534 INFO L93 Difference]: Finished difference Result 97 states and 201 transitions. [2020-11-09 17:02:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:02:11,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 17:02:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:11,536 INFO L225 Difference]: With dead ends: 97 [2020-11-09 17:02:11,536 INFO L226 Difference]: Without dead ends: 69 [2020-11-09 17:02:11,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-09 17:02:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-09 17:02:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-09 17:02:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 141 transitions. [2020-11-09 17:02:11,543 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 141 transitions. Word has length 13 [2020-11-09 17:02:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:11,544 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 141 transitions. [2020-11-09 17:02:11,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 141 transitions. [2020-11-09 17:02:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:02:11,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:11,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:11,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:02:11,546 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:11,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720345, now seen corresponding path program 1 times [2020-11-09 17:02:11,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:11,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98634087] [2020-11-09 17:02:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:11,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98634087] [2020-11-09 17:02:11,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:11,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:11,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [897615212] [2020-11-09 17:02:11,698 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:11,700 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:11,708 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-11-09 17:02:11,709 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:11,763 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4278#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:02:11,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 17:02:11,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 17:02:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:02:11,765 INFO L87 Difference]: Start difference. First operand 69 states and 141 transitions. Second operand 6 states. [2020-11-09 17:02:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:11,827 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2020-11-09 17:02:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:02:11,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 17:02:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:11,829 INFO L225 Difference]: With dead ends: 71 [2020-11-09 17:02:11,829 INFO L226 Difference]: Without dead ends: 52 [2020-11-09 17:02:11,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:02:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-09 17:02:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-09 17:02:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-09 17:02:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-11-09 17:02:11,833 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-11-09 17:02:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:11,833 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-11-09 17:02:11,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 17:02:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-11-09 17:02:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:02:11,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:11,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:11,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:02:11,835 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash 391097630, now seen corresponding path program 1 times [2020-11-09 17:02:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513538094] [2020-11-09 17:02:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:11,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513538094] [2020-11-09 17:02:11,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:11,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:02:11,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1579174102] [2020-11-09 17:02:11,926 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:11,928 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:11,934 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-11-09 17:02:11,934 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:12,016 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4462#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:02:12,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:02:12,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:02:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:02:12,019 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 7 states. [2020-11-09 17:02:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:12,084 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2020-11-09 17:02:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:02:12,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:02:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:12,086 INFO L225 Difference]: With dead ends: 49 [2020-11-09 17:02:12,086 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 17:02:12,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:02:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 17:02:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 17:02:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 17:02:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-11-09 17:02:12,088 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 15 [2020-11-09 17:02:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:12,089 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-11-09 17:02:12,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:02:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-11-09 17:02:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:02:12,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:12,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:12,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:02:12,090 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 1 times [2020-11-09 17:02:12,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:12,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443738328] [2020-11-09 17:02:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:02:12,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443738328] [2020-11-09 17:02:12,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:12,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:12,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1125431362] [2020-11-09 17:02:12,147 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:12,151 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:12,163 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 63 transitions. [2020-11-09 17:02:12,163 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:12,230 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:12,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:12,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:12,232 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-11-09 17:02:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:12,249 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-11-09 17:02:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:02:12,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:02:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:12,250 INFO L225 Difference]: With dead ends: 41 [2020-11-09 17:02:12,250 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:02:12,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:12,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:02:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:02:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:02:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:02:12,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:02:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:12,253 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:02:12,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:02:12,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:02:12,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:02:12,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:02:12 BasicIcfg [2020-11-09 17:02:12,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:02:12,262 INFO L168 Benchmark]: Toolchain (without parser) took 9974.46 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 125.3 MB in the beginning and 156.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,263 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:02:12,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 129.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.29 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 127.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,272 INFO L168 Benchmark]: Boogie Preprocessor took 73.42 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 126.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,277 INFO L168 Benchmark]: RCFGBuilder took 751.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 104.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,282 INFO L168 Benchmark]: TraceAbstraction took 8195.02 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 104.0 MB in the beginning and 156.7 MB in the end (delta: -52.8 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:12,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 867.36 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 129.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.29 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 127.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.42 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 126.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 751.37 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 104.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8195.02 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 104.0 MB in the beginning and 156.7 MB in the end (delta: -52.8 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 189 SDtfs, 120 SDslu, 211 SDs, 0 SdLazy, 131 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s 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, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3573 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...