/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:20:23,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:20:23,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:20:23,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:20:23,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:20:23,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:20:23,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:20:23,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:20:23,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:20:23,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:20:23,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:20:23,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:20:23,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:20:23,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:20:23,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:20:23,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:20:23,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:20:23,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:20:23,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:20:23,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:20:23,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:20:23,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:20:23,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:20:23,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:20:23,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:20:23,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:20:23,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:20:23,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:20:23,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:20:23,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:20:23,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:20:23,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:20:23,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:20:23,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:20:23,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:20:23,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:20:23,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:20:23,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:20:23,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:20:23,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:20:23,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:20:23,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 11:20:23,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:20:23,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:20:23,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:20:23,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:20:23,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:20:23,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:20:23,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:20:23,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:20:23,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:20:23,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:20:23,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:20:23,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:20:23,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:20:23,798 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:20:23,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-11 11:20:23,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ba84fd8/7cb50d75726f485c93089add7100f12d/FLAG7d1d7e219 [2021-03-11 11:20:24,254 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:20:24,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-11 11:20:24,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ba84fd8/7cb50d75726f485c93089add7100f12d/FLAG7d1d7e219 [2021-03-11 11:20:24,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ba84fd8/7cb50d75726f485c93089add7100f12d [2021-03-11 11:20:24,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:20:24,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:20:24,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:20:24,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:20:24,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:20:24,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306ecb8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24, skipping insertion in model container [2021-03-11 11:20:24,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:20:24,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:20:24,420 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-03-11 11:20:24,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:20:24,557 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:20:24,565 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-03-11 11:20:24,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:20:24,630 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:20:24,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24 WrapperNode [2021-03-11 11:20:24,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:20:24,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:20:24,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:20:24,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:20:24,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:20:24,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:20:24,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:20:24,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:20:24,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (1/1) ... [2021-03-11 11:20:24,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:20:24,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:20:24,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:20:24,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:20:24,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (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 [2021-03-11 11:20:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:20:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:20:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:20:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:20:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:20:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:20:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:20:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:20:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:20:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:20:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:20:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:20:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:20:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:20:24,723 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:20:24,984 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:20:24,984 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:20:24,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:20:24 BoogieIcfgContainer [2021-03-11 11:20:24,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:20:24,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:20:24,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:20:24,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:20:24,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:20:24" (1/3) ... [2021-03-11 11:20:24,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d763e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:20:24, skipping insertion in model container [2021-03-11 11:20:24,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:20:24" (2/3) ... [2021-03-11 11:20:24,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759d763e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:20:24, skipping insertion in model container [2021-03-11 11:20:24,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:20:24" (3/3) ... [2021-03-11 11:20:24,990 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-03-11 11:20:24,994 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:20:24,995 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:20:24,997 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:20:24,998 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:20:25,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,028 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,028 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,037 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,037 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:20:25,039 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:20:25,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:20:25,072 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:20:25,072 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:20:25,073 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:20:25,073 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:20:25,073 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:20:25,073 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:20:25,073 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:20:25,073 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:20:25,084 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:20:25,102 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:20:25,104 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:20:25,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 11:20:25,144 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 11:20:25,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:20:25,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 11:20:25,167 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2021-03-11 11:20:26,615 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-11 11:20:26,779 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-11 11:20:27,079 INFO L131 LiptonReduction]: Checked pairs total: 2406 [2021-03-11 11:20:27,079 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-03-11 11:20:27,084 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-03-11 11:20:27,100 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:20:27,105 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,105 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,106 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1900502865, now seen corresponding path program 1 times [2021-03-11 11:20:27,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856324639] [2021-03-11 11:20:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:20:27,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:20:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856324639] [2021-03-11 11:20:27,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:20:27,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078844958] [2021-03-11 11:20:27,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:20:27,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:20:27,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:20:27,274 INFO L87 Difference]: Start difference. First operand has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,289 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-03-11 11:20:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:20:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-03-11 11:20:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,297 INFO L225 Difference]: With dead ends: 282 [2021-03-11 11:20:27,297 INFO L226 Difference]: Without dead ends: 234 [2021-03-11 11:20:27,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:20:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-03-11 11:20:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-03-11 11:20:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2021-03-11 11:20:27,334 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2021-03-11 11:20:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,334 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2021-03-11 11:20:27,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2021-03-11 11:20:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:20:27,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,335 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:20:27,335 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1213932981, now seen corresponding path program 1 times [2021-03-11 11:20:27,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893454462] [2021-03-11 11:20:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,387 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:20:27,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:27,395 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893454462] [2021-03-11 11:20:27,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:20:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131639239] [2021-03-11 11:20:27,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:20:27,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:20:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:20:27,400 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,432 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2021-03-11 11:20:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:20:27,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 11:20:27,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,437 INFO L225 Difference]: With dead ends: 402 [2021-03-11 11:20:27,438 INFO L226 Difference]: Without dead ends: 308 [2021-03-11 11:20:27,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-03-11 11:20:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-03-11 11:20:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.7072243346007605) internal successors, (712), 263 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2021-03-11 11:20:27,471 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2021-03-11 11:20:27,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,471 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2021-03-11 11:20:27,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,472 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2021-03-11 11:20:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:20:27,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:20:27,473 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash 390430348, now seen corresponding path program 1 times [2021-03-11 11:20:27,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099148360] [2021-03-11 11:20:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,551 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:20:27,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:27,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099148360] [2021-03-11 11:20:27,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:20:27,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164068788] [2021-03-11 11:20:27,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:20:27,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:20:27,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:27,562 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,607 INFO L93 Difference]: Finished difference Result 342 states and 866 transitions. [2021-03-11 11:20:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:20:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 11:20:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,610 INFO L225 Difference]: With dead ends: 342 [2021-03-11 11:20:27,610 INFO L226 Difference]: Without dead ends: 286 [2021-03-11 11:20:27,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:20:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-03-11 11:20:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 242. [2021-03-11 11:20:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.6473029045643153) internal successors, (638), 241 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 638 transitions. [2021-03-11 11:20:27,626 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 638 transitions. Word has length 10 [2021-03-11 11:20:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,626 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 638 transitions. [2021-03-11 11:20:27,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 638 transitions. [2021-03-11 11:20:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:20:27,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:20:27,631 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1615816520, now seen corresponding path program 1 times [2021-03-11 11:20:27,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490873502] [2021-03-11 11:20:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,675 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:20:27,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:27,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490873502] [2021-03-11 11:20:27,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:20:27,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931630360] [2021-03-11 11:20:27,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:20:27,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:20:27,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:27,686 INFO L87 Difference]: Start difference. First operand 242 states and 638 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,741 INFO L93 Difference]: Finished difference Result 377 states and 943 transitions. [2021-03-11 11:20:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 11:20:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 11:20:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,745 INFO L225 Difference]: With dead ends: 377 [2021-03-11 11:20:27,746 INFO L226 Difference]: Without dead ends: 296 [2021-03-11 11:20:27,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:20:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-03-11 11:20:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 252. [2021-03-11 11:20:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.633466135458167) internal successors, (661), 251 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 661 transitions. [2021-03-11 11:20:27,754 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 661 transitions. Word has length 10 [2021-03-11 11:20:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,754 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 661 transitions. [2021-03-11 11:20:27,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 661 transitions. [2021-03-11 11:20:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:20:27,755 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,755 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:20:27,759 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1473174193, now seen corresponding path program 1 times [2021-03-11 11:20:27,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567313714] [2021-03-11 11:20:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,785 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:20:27,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:27,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567313714] [2021-03-11 11:20:27,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:20:27,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026408842] [2021-03-11 11:20:27,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:20:27,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:20:27,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:27,794 INFO L87 Difference]: Start difference. First operand 252 states and 661 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,822 INFO L93 Difference]: Finished difference Result 317 states and 788 transitions. [2021-03-11 11:20:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:20:27,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:20:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,828 INFO L225 Difference]: With dead ends: 317 [2021-03-11 11:20:27,828 INFO L226 Difference]: Without dead ends: 278 [2021-03-11 11:20:27,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:20:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-03-11 11:20:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 234. [2021-03-11 11:20:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.592274678111588) internal successors, (604), 233 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 604 transitions. [2021-03-11 11:20:27,835 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 604 transitions. Word has length 11 [2021-03-11 11:20:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,835 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 604 transitions. [2021-03-11 11:20:27,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 604 transitions. [2021-03-11 11:20:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:20:27,836 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,836 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:20:27,836 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1449264513, now seen corresponding path program 1 times [2021-03-11 11:20:27,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974840038] [2021-03-11 11:20:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974840038] [2021-03-11 11:20:27,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:20:27,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256827572] [2021-03-11 11:20:27,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:20:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:20:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:27,883 INFO L87 Difference]: Start difference. First operand 234 states and 604 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:27,911 INFO L93 Difference]: Finished difference Result 276 states and 681 transitions. [2021-03-11 11:20:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:20:27,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:20:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:27,912 INFO L225 Difference]: With dead ends: 276 [2021-03-11 11:20:27,912 INFO L226 Difference]: Without dead ends: 114 [2021-03-11 11:20:27,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:20:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-03-11 11:20:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-03-11 11:20:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.2831858407079646) internal successors, (258), 113 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 258 transitions. [2021-03-11 11:20:27,920 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 258 transitions. Word has length 11 [2021-03-11 11:20:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:27,921 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 258 transitions. [2021-03-11 11:20:27,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 258 transitions. [2021-03-11 11:20:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:20:27,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:27,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:27,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:20:27,922 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:27,925 INFO L82 PathProgramCache]: Analyzing trace with hash 890678064, now seen corresponding path program 1 times [2021-03-11 11:20:27,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:27,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210303964] [2021-03-11 11:20:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:27,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:27,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:27,969 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:20:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:27,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:20:27,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:27,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210303964] [2021-03-11 11:20:27,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:27,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:20:27,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975281890] [2021-03-11 11:20:27,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:20:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:20:27,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:20:27,986 INFO L87 Difference]: Start difference. First operand 114 states and 258 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:28,011 INFO L93 Difference]: Finished difference Result 146 states and 322 transitions. [2021-03-11 11:20:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:20:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:20:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:28,012 INFO L225 Difference]: With dead ends: 146 [2021-03-11 11:20:28,012 INFO L226 Difference]: Without dead ends: 56 [2021-03-11 11:20:28,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:20:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-03-11 11:20:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-03-11 11:20:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-03-11 11:20:28,016 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 13 [2021-03-11 11:20:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:28,016 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-03-11 11:20:28,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-03-11 11:20:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:20:28,016 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:28,016 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:28,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:20:28,016 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2113399366, now seen corresponding path program 2 times [2021-03-11 11:20:28,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:28,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096847414] [2021-03-11 11:20:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:28,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:28,083 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-03-11 11:20:28,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:20:28,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:20:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:28,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096847414] [2021-03-11 11:20:28,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:28,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:20:28,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413860076] [2021-03-11 11:20:28,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:20:28,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:28,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:20:28,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:20:28,090 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:28,109 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2021-03-11 11:20:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:20:28,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:20:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:28,110 INFO L225 Difference]: With dead ends: 58 [2021-03-11 11:20:28,110 INFO L226 Difference]: Without dead ends: 45 [2021-03-11 11:20:28,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-03-11 11:20:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-03-11 11:20:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2021-03-11 11:20:28,112 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2021-03-11 11:20:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:28,112 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2021-03-11 11:20:28,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2021-03-11 11:20:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:20:28,112 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:28,112 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:28,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:20:28,112 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:28,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1238782622, now seen corresponding path program 1 times [2021-03-11 11:20:28,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:28,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157134108] [2021-03-11 11:20:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:28,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:28,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:20:28,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:28,166 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:20:28,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:28,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:20:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:28,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157134108] [2021-03-11 11:20:28,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:28,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:20:28,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505496818] [2021-03-11 11:20:28,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:20:28,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:28,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:20:28,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:20:28,173 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:28,193 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-03-11 11:20:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:20:28,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-11 11:20:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:28,194 INFO L225 Difference]: With dead ends: 35 [2021-03-11 11:20:28,194 INFO L226 Difference]: Without dead ends: 27 [2021-03-11 11:20:28,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:20:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-03-11 11:20:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-03-11 11:20:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-03-11 11:20:28,195 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2021-03-11 11:20:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:28,195 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-03-11 11:20:28,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-03-11 11:20:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:20:28,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:20:28,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:20:28,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:20:28,195 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:20:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:20:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash 252728671, now seen corresponding path program 1 times [2021-03-11 11:20:28,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:20:28,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473107673] [2021-03-11 11:20:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:20:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:20:28,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:28,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:20:28,219 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:20:28,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:20:28,223 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:20:28,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:20:28,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:20:28,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:20:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:20:28,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473107673] [2021-03-11 11:20:28,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:20:28,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:20:28,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76191844] [2021-03-11 11:20:28,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:20:28,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:20:28,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:20:28,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:20:28,230 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:20:28,243 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-03-11 11:20:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:20:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-11 11:20:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:20:28,243 INFO L225 Difference]: With dead ends: 21 [2021-03-11 11:20:28,243 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:20:28,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:20:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:20:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:20:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:20:28,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-03-11 11:20:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:20:28,244 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:20:28,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:20:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:20:28,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:20:28,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:20:28,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:20:28 BasicIcfg [2021-03-11 11:20:28,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:20:28,247 INFO L168 Benchmark]: Toolchain (without parser) took 3964.99 ms. Allocated memory was 255.9 MB in the beginning and 463.5 MB in the end (delta: 207.6 MB). Free memory was 234.6 MB in the beginning and 265.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 176.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,247 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 168.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:20:28,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.59 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.1 MB in the beginning and 348.3 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.07 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 346.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,248 INFO L168 Benchmark]: Boogie Preprocessor took 12.40 ms. Allocated memory is still 385.9 MB. Free memory was 346.1 MB in the beginning and 344.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,248 INFO L168 Benchmark]: RCFGBuilder took 318.13 ms. Allocated memory is still 385.9 MB. Free memory was 344.7 MB in the beginning and 323.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,249 INFO L168 Benchmark]: TraceAbstraction took 3260.11 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 322.4 MB in the beginning and 265.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 135.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:20:28,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 168.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 345.59 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.1 MB in the beginning and 348.3 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.07 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 346.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.40 ms. Allocated memory is still 385.9 MB. Free memory was 346.1 MB in the beginning and 344.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 318.13 ms. Allocated memory is still 385.9 MB. Free memory was 344.7 MB in the beginning and 323.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3260.11 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 322.4 MB in the beginning and 265.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 135.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1975.7ms, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1406, positive: 1324, positive conditional: 0, positive unconditional: 1324, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 859, positive: 834, positive conditional: 0, positive unconditional: 834, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 859, positive: 827, positive conditional: 0, positive unconditional: 827, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 118, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1406, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 859, unknown conditional: 0, unknown unconditional: 859] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3174.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 14.0ms, AutomataDifference: 330.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2026.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 209 SDtfs, 234 SDslu, 338 SDs, 0 SdLazy, 145 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 161.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 176 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.3ms SsaConstructionTime, 136.5ms SatisfiabilityAnalysisTime, 390.2ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 540 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...